Fix lint warnings

Fixed warnings:
```md
app/scripts/controllers/computed-balances.js
+ 35:27  warning  Missing space before function parentheses            space-before-function-paren
+ 41:14  warning  'address' is never reassigned. Use 'const' instead   prefer-const
+ 61:9   warning  'updater' is never reassigned. Use 'const' instead   prefer-const
+ 68:11  warning  'newState' is never reassigned. Use 'const' instead  prefer-const

app/scripts/controllers/network.js
+ 104:29  warning  Missing space before function parentheses  space-before-function-paren

app/scripts/lib/createLoggerMiddleware.js
+ 4:32  warning  Missing space before function parentheses      space-before-function-paren
+ 15:2   warning  Newline required at end of file but not found  eol-last

app/scripts/lib/createOriginMiddleware.js
+ 4:32  warning  Missing space before function parentheses      space-before-function-paren
+ 9:2   warning  Newline required at end of file but not found  eol-last

app/scripts/lib/createProviderMiddleware.js
+ 5:34  warning  Missing space before function parentheses      space-before-function-paren
+ 13:2   warning  Newline required at end of file but not found  eol-last

app/scripts/lib/events-proxy.js
+ 1:50  warning  Missing space before function parentheses      space-before-function-paren
+ 31:2   warning  Newline required at end of file but not found  eol-last

app/scripts/lib/nodeify.js
+ 2:22  warning  Missing space before function parentheses  space-before-function-paren
+ 2:24  warning  Missing space before opening brace         space-before-blocks
+ 5:18  warning  Missing space before function parentheses  space-before-function-paren
+ 5:20  warning  Missing space before opening brace         space-before-blocks

app/scripts/lib/pending-balance-calculator.js
+ 16:19  warning  Missing space before function parentheses  space-before-function-paren

app/scripts/lib/pending-tx-tracker.js
+ 85:11  warning  '||' should be placed at the end of the line  operator-linebreak
+ 87:11  warning  '||' should be placed at the end of the line  operator-linebreak
+ 88:11  warning  '||' should be placed at the end of the line  operator-linebreak
+ 90:11  warning  '||' should be placed at the end of the line  operator-linebreak
+ 91:11  warning  '||' should be placed at the end of the line  operator-linebreak

app/scripts/lib/port-stream.js
+ 3:22  warning  Missing space before function parentheses  space-before-function-paren
+ 3:24  warning  Missing space before opening brace         space-before-blocks

app/scripts/lib/tx-gas-utils.js
+ 84:2  warning  Newline required at end of file but not found  eol-last

app/scripts/lib/tx-state-history-helper.js
+ 12:37  warning  Missing space before function parentheses      space-before-function-paren
+ 23:30  warning  Missing space before function parentheses      space-before-function-paren
+ 30:23  warning  Missing space before function parentheses      space-before-function-paren
+ 35:28  warning  Missing space before function parentheses      space-before-function-paren
+ 41:2   warning  Newline required at end of file but not found  eol-last

app/scripts/lib/tx-state-manager.js
+ 94:13  warning  'value' is never reassigned. Use 'const' instead  prefer-const

ui/app/reducers.js
+ 45:7  warning  'state' is never reassigned. Use 'const' instead        prefer-const
+ 53:7  warning  'stateString' is never reassigned. Use 'const' instead  prefer-const

ui/lib/tx-helper.js
+ 27:2  warning  Newline required at end of file but not found  eol-last

ui/app/components/account-dropdowns.js
+ 163:1  warning  More than 2 blank lines not allowed  no-multiple-empty-lines

ui/app/components/menu-droppo.js
+ 22:7  warning  'style' is never reassigned. Use 'const' instead  prefer-const

ui/app/components/shapeshift-form.js
+ 135:11  warning  '&&' should be placed at the end of the line  operator-linebreak

ui/app/components/typed-message-renderer.js
+ 35:25  warning  Missing space before function parentheses      space-before-function-paren
+ 42:2   warning  Newline required at end of file but not found  eol-last

mascara/server/index.js
+ 11:42  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
+ 12:36  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
+ 13:33  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
+ 14:40  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
+ 20:29  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
+ 21:29  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
+ 26:40  warning  Use path.join() or path.resolve() instead of + to create paths  no-path-concat
```

1 files changed, 0 insertions, 2 deletions

diff --git a/ui/app/components/account-dropdowns.js b/ui/app/components/account-dropdowns.js
index 1b46e532a..379e40da7 100644
--- a/ui/app/components/account-dropdowns.js
+++ b/ui/app/components/account-dropdowns.js
@@ -161,8 +161,6 @@ class AccountDropdowns extends Component {
     )
   }
 
-
-
   renderAccountOptions () {
     const { actions } = this.props
     const { optionsMenuActive } = this.state