message: Change icons to use ember-font-awesome helpers
diff: <th colspan='2' class='col-xs-2'>Download</th>
  <th class='hidden-md hidden-sm hidden-xs'>
  MD5
  - <i class='fa fa-question-circle'>
  + <span>
  + {{fa-icon "question-circle"}}
  {{#bs-popover triggerEvents='hover' placement='top'}}MD5 is an algorithm used to verify data integrity.{{/bs-popover}}
  - </i>
  + </span>
  </th>
  <th class='hidden-md hidden-sm hidden-xs'>
  SHA2
  - <i class='fa fa-question-circle'>
  + <span>
  + {{fa-icon "question-circle"}}
  {{#bs-popover triggerEvents='hover' placement='top'}}SHA-2 is a cryptographic hash function designed by the NSA used to verify data integrity.{{/bs-popover}}
  - </i>
  + </span>
  </th>
  </tr>
  </thead>
  