Remove superfluous label.
Move the directives.js file to the correct place. Gets rid of the 'no
module named askApp' error.
Some respondent detail page tweaks.

- Hides the back button if we don't know where to go back to (someone
  bookmarked the page without the base64 part, maybe?)
- Adds some 'Set Status:' helper text to make it clear what the drop
  down is doing
- Changed the header sizes