Added few missing translations

First of all:
+ bottom command bar labels
+ missing command translation
+ command not supported in current environment translation

src/js/react_views/CommandsHelperBarView.jsx

@@ -4,6 +4,7 @@ var HelperBarView = require('../react_views/HelperBarView.jsx');
 var Main = require('../app');
 
 var log = require('../log');
+var intl = require('../intl');
 
 class CommandsHelperBarView extends React.Component {
 
@@ -23,32 +24,32 @@ class CommandsHelperBarView extends React.Component {
 
   getItems() {
     return [{
-      text: 'Levels',
+      text: intl.str('command-helper-bar-levels'),
       onClick: function() {
         this.fireCommand('levels');
       }.bind(this),
     }, {
-      text: 'Solution',
+      text: intl.str('command-helper-bar-solution'),
       onClick: function() {
         this.fireCommand('show solution');
       }.bind(this),
     }, {
-      text: 'Reset',
+      text: intl.str('command-helper-bar-reset'),
       onClick: function() {
         this.fireCommand('reset');
       }.bind(this),
     }, {
-      text: 'Undo',
+      text: intl.str('command-helper-bar-undo'),
       onClick: function() {
         this.fireCommand('undo');
       }.bind(this),
     }, {
-      text: 'Objective',
+      text: intl.str('command-helper-bar-objective'),
       onClick: function() {
         this.fireCommand('objective');
       }.bind(this),
     }, {
-      text: 'Help',
+      text: intl.str('command-helper-bar-help'),
       onClick: function() {
         this.fireCommand('help general; git help');
       }.bind(this)

src/js/react_views/LevelToolbarView.jsx

@@ -48,7 +48,7 @@ class LevelToolbarView extends React.Component {
         <div className="clearfix">
           <div className="levelNameWrapper">
             <i className="icon-bolt"></i>
-            {' Level '}
+            { intl.str('level-label') }
             <span className="levelToolbarSpan">
               {this.props.name}
             </span>