Feature(settings): update language settings copy

common/app/routes/settings/components/Language-Settings.jsx

@@ -1,7 +1,7 @@
 import React, { PropTypes } from 'react';
 import { createSelector } from 'reselect';
 import { reduxForm } from 'redux-form';
-import { FormControl } from 'react-bootstrap';
+import { FormControl, FormGroup } from 'react-bootstrap';
 
 import { updateMyLang } from '../redux/actions';
 import { userSelector } from '../../../redux/selectors';
@@ -83,14 +83,17 @@ export class LangaugeSettings extends React.Component {
       fields: { lang }
     } = this.props;
     return (
+      <FormGroup>
         <FormControl
-        className='btn btn-block btn-primary btn-link-social'
+          className='btn btn-block btn-primary btn-link-social btn-lg'
           componentClass='select'
           { ...lang }
           onChange={ this.handleChange }
+          style={{ height: '45px' }}
           >
           { options }
         </FormControl>
+      </FormGroup>
     );
   }
 }

common/app/routes/settings/components/Settings.jsx

@@ -245,7 +245,7 @@ export class Settings extends React.Component {
           </Col>
         </Row>
         <div className='spacer' />
-        <h2 className='text-center'>Language Settings</h2>
+        <h2 className='text-center'>Display challenges in:</h2>
         <Row>
           <Col
             md={ 6 }