jslint: fix jslint warnings (#1704)

* jslint: remove trailing space

* jslint: fix no-nested-ternary issue

Follow the jslint [no-nested-ternary](http://eslint.org/docs/rules/no-nested-ternary)
rule. Rewritten ternary with if-then.

app/assets/javascripts/components/components/status_action_bar.jsx

@@ -92,10 +92,14 @@ const StatusActionBar = React.createClass({
       menu.push({ text: intl.formatMessage(messages.report, { name: status.getIn(['account', 'username']) }), action: this.handleReport });
     }
 
+    let reblogIcon = 'retweet';
+    if (status.get('visibility') === 'direct') reblogIcon = 'envelope';
+    else if (status.get('visibility') === 'private') reblogIcon = 'lock';
+
     return (
       <div style={{ marginTop: '10px', overflow: 'hidden' }}>
         <div style={{ float: 'left', marginRight: '18px'}}><IconButton title={intl.formatMessage(messages.reply)} icon='reply' onClick={this.handleReplyClick} /></div>
-        <div style={{ float: 'left', marginRight: '18px'}}><IconButton disabled={status.get('visibility') === 'private' || status.get('visibility') === 'direct'} active={status.get('reblogged')} title={intl.formatMessage(messages.reblog)} icon={status.get('visibility') === 'direct' ? 'envelope' : (status.get('visibility') === 'private' ? 'lock' : 'retweet')} onClick={this.handleReblogClick} /></div>
+        <div style={{ float: 'left', marginRight: '18px'}}><IconButton disabled={status.get('visibility') === 'private' || status.get('visibility') === 'direct'} active={status.get('reblogged')} title={intl.formatMessage(messages.reblog)} icon={reblogIcon} onClick={this.handleReblogClick} /></div>
         <div style={{ float: 'left', marginRight: '18px'}}><IconButton animate={true} active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} activeStyle={{ color: '#ca8f04' }} /></div>
 
         <div style={{ width: '18px', height: '18px', float: 'left' }}>

app/assets/javascripts/components/features/compose/components/compose_form.jsx

@@ -92,7 +92,7 @@ const ComposeForm = React.createClass({
   },
 
   componentDidUpdate (prevProps) {
-    // This statement does several things: 
+    // This statement does several things:
     // - If we're beginning a reply, and,
     //     - Replying to zero or one users, places the cursor at the end of the textbox.
     //     - Replying to more than one user, selects any usernames past the first;

app/assets/javascripts/components/features/status/components/action_bar.jsx

@@ -71,10 +71,14 @@ const ActionBar = React.createClass({
       menu.push({ text: intl.formatMessage(messages.report, { name: status.getIn(['account', 'username']) }), action: this.handleReport });
     }
 
+    let reblogIcon = 'retweet';
+    if (status.get('visibility') === 'direct') reblogIcon = 'envelope';
+    else if (status.get('visibility') === 'private') reblogIcon = 'lock';
+
     return (
       <div className='detailed-status__action-bar'>
         <div style={{ flex: '1 1 auto', textAlign: 'center' }}><IconButton title={intl.formatMessage(messages.reply)} icon='reply' onClick={this.handleReplyClick} /></div>
-        <div style={{ flex: '1 1 auto', textAlign: 'center' }}><IconButton disabled={status.get('visibility') === 'direct' || status.get('visibility') === 'private'} active={status.get('reblogged')} title={intl.formatMessage(messages.reblog)} icon={status.get('visibility') === 'direct' ? 'envelope' : (status.get('visibility') === 'private' ? 'lock' : 'retweet')} onClick={this.handleReblogClick} /></div>
+        <div style={{ flex: '1 1 auto', textAlign: 'center' }}><IconButton disabled={status.get('visibility') === 'direct' || status.get('visibility') === 'private'} active={status.get('reblogged')} title={intl.formatMessage(messages.reblog)} icon={reblogIcon} onClick={this.handleReblogClick} /></div>
         <div style={{ flex: '1 1 auto', textAlign: 'center' }}><IconButton animate={true} active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} activeStyle={{ color: '#ca8f04' }} /></div>
         <div style={{ flex: '1 1 auto', textAlign: 'center' }}><DropdownMenu size={18} icon='ellipsis-h' items={menu} direction="left" /></div>
       </div>