Merge branch 'development' into breakUp0xjs

* development: (38 commits)
  Add fallback image support to relayer grid tile
  Clear relayer grid state when fetching
  Configure the compiler to generate artifacts with deployedBytecode
  Implement loading and error state for relayer grid
  Fallback image for relayer grid tile
  Change relayer grid tile to link on header
  Display top tokens from backend
  Remove overflowZ property from portal
  Suggestions and fix bad merge
  Fix typo
  Only show untracked tokens
  Make wallet scrollable
  Add token flow
  Update The Ocean logo
  Fix artifacts paths
  Create an artifacts folder
  Introduce a var
  Add removeHexPrefix util method
  CHeck if ABI exists
  Improve the readability of the check for should compile
  ...

# Conflicts:
#	.gitignore
#	packages/contracts/test/multi_sig_with_time_lock.ts
#	packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
#	packages/contracts/util/artifacts.ts

3 files changed, 119 insertions, 69 deletions

diff --git a/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx b/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx
index 0b9b8165e..d88a59d15 100644
--- a/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx
+++ b/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx
@@ -12,37 +12,6 @@ export interface RelayerGridTileProps {
     networkId: number;
 }
 
-// TODO: Get top tokens from remote
-const topTokens = [
-    {
-        address: '0x1dad4783cf3fe3085c1426157ab175a6119a04ba',
-        decimals: 18,
-        iconUrl: '/images/token_icons/makerdao.png',
-        isRegistered: true,
-        isTracked: true,
-        name: 'Maker DAO',
-        symbol: 'MKR',
-    },
-    {
-        address: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-        decimals: 18,
-        iconUrl: '/images/token_icons/melon.png',
-        isRegistered: true,
-        isTracked: true,
-        name: 'Melon Token',
-        symbol: 'MLN',
-    },
-    {
-        address: '0xb18845c260f680d5b9d84649638813e342e4f8c9',
-        decimals: 18,
-        iconUrl: '/images/token_icons/augur.png',
-        isRegistered: true,
-        isTracked: true,
-        name: 'Augur Reputation Token',
-        symbol: 'REP',
-    },
-];
-
 const styles: Styles = {
     root: {
         backgroundColor: colors.white,
@@ -93,28 +62,63 @@ const styles: Styles = {
     },
 };
 
+const FALLBACK_IMG_SRC = '/images/landing/hero_chip_image.png';
+
 export const RelayerGridTile: React.StatelessComponent<RelayerGridTileProps> = (props: RelayerGridTileProps) => {
     const link = props.relayerInfo.appUrl || props.relayerInfo.url;
     return (
-        <a href={link} target="_blank" style={{ textDecoration: 'none' }}>
-            <GridTile style={styles.root}>
-                <div style={styles.innerDiv}>
-                    <img src={props.relayerInfo.headerImgUrl} style={styles.header} />
-                    <div style={styles.body}>
-                        <div className="py1" style={styles.relayerNameLabel}>
-                            {props.relayerInfo.name}
-                        </div>
-                        <div style={styles.dailyTradeVolumeLabel}>{props.relayerInfo.dailyTxnVolume}</div>
-                        <div className="py1" style={styles.subLabel}>
-                            Daily Trade Volume
-                        </div>
-                        <TopTokens tokens={topTokens} networkId={props.networkId} />
-                        <div className="py1" style={styles.subLabel}>
-                            Top tokens
-                        </div>
+        <GridTile style={styles.root}>
+            <div style={styles.innerDiv}>
+                <a href={link} target="_blank" style={{ textDecoration: 'none' }}>
+                    <ImgWithFallback
+                        src={props.relayerInfo.headerImgUrl}
+                        fallbackSrc={FALLBACK_IMG_SRC}
+                        style={styles.header}
+                    />
+                </a>
+                <div style={styles.body}>
+                    <div className="py1" style={styles.relayerNameLabel}>
+                        {props.relayerInfo.name}
+                    </div>
+                    <div style={styles.dailyTradeVolumeLabel}>{props.relayerInfo.dailyTxnVolume}</div>
+                    <div className="py1" style={styles.subLabel}>
+                        Daily Trade Volume
+                    </div>
+                    <TopTokens tokens={props.relayerInfo.topTokens} networkId={props.networkId} />
+                    <div className="py1" style={styles.subLabel}>
+                        Top tokens
                     </div>
                 </div>
-            </GridTile>
-        </a>
+            </div>
+        </GridTile>
     );
 };
+
+interface ImgWithFallbackProps {
+    src?: string;
+    fallbackSrc: string;
+    style: React.CSSProperties;
+}
+interface ImgWithFallbackState {
+    imageLoadFailed: boolean;
+}
+class ImgWithFallback extends React.Component<ImgWithFallbackProps, ImgWithFallbackState> {
+    constructor(props: ImgWithFallbackProps) {
+        super(props);
+        this.state = {
+            imageLoadFailed: false,
+        };
+    }
+    public render() {
+        if (this.state.imageLoadFailed || _.isUndefined(this.props.src)) {
+            return <img src={this.props.fallbackSrc} style={this.props.style} />;
+        } else {
+            return <img src={this.props.src} onError={this._onError.bind(this)} style={this.props.style} />;
+        }
+    }
+    private _onError() {
+        this.setState({
+            imageLoadFailed: true,
+        });
+    }
+}
diff --git a/packages/website/ts/components/relayer_index/relayer_index.tsx b/packages/website/ts/components/relayer_index/relayer_index.tsx
index c1ab4227a..dffd0f83f 100644
--- a/packages/website/ts/components/relayer_index/relayer_index.tsx
+++ b/packages/website/ts/components/relayer_index/relayer_index.tsx
@@ -1,5 +1,7 @@
 import { colors, Styles } from '@0xproject/react-shared';
 import * as _ from 'lodash';
+import CircularProgress from 'material-ui/CircularProgress';
+import FlatButton from 'material-ui/FlatButton';
 import { GridList } from 'material-ui/GridList';
 import * as React from 'react';
 
@@ -32,9 +34,9 @@ const styles: Styles = {
     },
 };
 
-const CELL_HEIGHT = 260;
+const CELL_HEIGHT = 290;
 const NUMBER_OF_COLUMNS = 4;
-const GRID_PADDING = 16;
+const GRID_PADDING = 20;
 
 export class RelayerIndex extends React.Component<RelayerIndexProps, RelayerIndexState> {
     private _isUnmounted: boolean;
@@ -55,7 +57,24 @@ export class RelayerIndex extends React.Component<RelayerIndexProps, RelayerInde
     }
     public render() {
         const readyToRender = _.isUndefined(this.state.error) && !_.isUndefined(this.state.relayerInfos);
-        if (readyToRender) {
+        if (!readyToRender) {
+            return (
+                <div className="col col-12" style={{ ...styles.root, height: '100%' }}>
+                    <div
+                        className="relative sm-px2 sm-pt2 sm-m1"
+                        style={{ height: 122, top: '33%', transform: 'translateY(-50%)' }}
+                    >
+                        <div className="center pb2">
+                            {_.isUndefined(this.state.error) ? (
+                                <CircularProgress size={40} thickness={5} />
+                            ) : (
+                                <Retry onRetry={this._fetchRelayerInfosAsync.bind(this)} />
+                            )}
+                        </div>
+                    </div>
+                </div>
+            );
+        } else {
             return (
                 <div style={styles.root}>
                     <GridList
@@ -64,23 +83,22 @@ export class RelayerIndex extends React.Component<RelayerIndexProps, RelayerInde
                         padding={GRID_PADDING}
                         style={styles.gridList}
                     >
-                        {this.state.relayerInfos.map((relayerInfo: WebsiteBackendRelayerInfo) => (
-                            <RelayerGridTile
-                                key={relayerInfo.name}
-                                relayerInfo={relayerInfo}
-                                networkId={this.props.networkId}
-                            />
+                        {this.state.relayerInfos.map((relayerInfo: WebsiteBackendRelayerInfo, index) => (
+                            <RelayerGridTile key={index} relayerInfo={relayerInfo} networkId={this.props.networkId} />
                         ))}
                     </GridList>
                 </div>
             );
-        } else {
-            // TODO: loading and error states with a scrolling container
-            return null;
         }
     }
     private async _fetchRelayerInfosAsync(): Promise<void> {
         try {
+            if (!this._isUnmounted) {
+                this.setState({
+                    relayerInfos: undefined,
+                    error: undefined,
+                });
+            }
             const relayerInfos = await backendClient.getRelayerInfosAsync();
             if (!this._isUnmounted) {
                 this.setState({
@@ -96,3 +114,31 @@ export class RelayerIndex extends React.Component<RelayerIndexProps, RelayerInde
         }
     }
 }
+
+interface RetryProps {
+    onRetry: () => void;
+}
+const Retry = (props: RetryProps) => (
+    <div className="clearfix center" style={{ color: colors.black }}>
+        <div className="mx-auto inline-block align-middle" style={{ lineHeight: '44px', textAlign: 'center' }}>
+            <div className="h2" style={{ fontFamily: 'Roboto Mono' }}>
+                Something went wrong.
+            </div>
+            <div className="py3">
+                <FlatButton
+                    label={'reload'}
+                    backgroundColor={colors.black}
+                    labelStyle={{
+                        fontSize: 18,
+                        fontFamily: 'Roboto Mono',
+                        fontWeight: 'lighter',
+                        color: colors.white,
+                        textTransform: 'lowercase',
+                    }}
+                    style={{ width: 280, height: 62, borderRadius: 5 }}
+                    onClick={props.onRetry}
+                />
+            </div>
+        </div>
+    </div>
+);
diff --git a/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx b/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx
index 233590b78..db4d3a211 100644
--- a/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx
+++ b/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx
@@ -3,10 +3,10 @@ import * as _ from 'lodash';
 import * as React from 'react';
 
 import { TokenIcon } from 'ts/components/ui/token_icon';
-import { Token } from 'ts/types';
+import { WebsiteBackendTokenInfo } from 'ts/types';
 
 export interface TopTokensProps {
-    tokens: Token[];
+    tokens: WebsiteBackendTokenInfo[];
     networkId: number;
 }
 
@@ -23,17 +23,17 @@ const styles: Styles = {
 export const TopTokens: React.StatelessComponent<TopTokensProps> = (props: TopTokensProps) => {
     return (
         <div className="flex">
-            {_.map(props.tokens, (token: Token, index: number) => {
+            {_.map(props.tokens, (tokenInfo: WebsiteBackendTokenInfo, index: number) => {
                 const firstItemStyle = { ...styles.tokenLabel, ...styles.followingTokenLabel };
                 const style = index !== 0 ? firstItemStyle : styles.tokenLabel;
                 return (
                     <a
-                        key={token.address}
-                        href={tokenLinkFromToken(token, props.networkId)}
+                        key={tokenInfo.address}
+                        href={tokenLinkFromToken(tokenInfo, props.networkId)}
                         target="_blank"
                         style={style}
                     >
-                        {token.symbol}
+                        {tokenInfo.symbol}
                     </a>
                 );
             })}
@@ -41,6 +41,6 @@ export const TopTokens: React.StatelessComponent<TopTokensProps> = (props: TopTo
     );
 };
 
-function tokenLinkFromToken(token: Token, networkId: number) {
-    return sharedUtils.getEtherScanLinkIfExists(token.address, networkId, EtherscanLinkSuffixes.Address);
+function tokenLinkFromToken(tokenInfo: WebsiteBackendTokenInfo, networkId: number) {
+    return sharedUtils.getEtherScanLinkIfExists(tokenInfo.address, networkId, EtherscanLinkSuffixes.Address);
 }