Rename hearing section to alternative
Merge pull request #24 from fastmonkeys/feature/rename-hearing-section-to-alternative

Rename hearing section to alternative
Add position and letter to alternatives
Add comment options string to comment adder
Add API support for commenting specific sections
Return all hearing comments from comment index
Add backrefs to image relations
Add tag strings to comments
Add parent preview to comments
Merge pull request #25 from fastmonkeys/feature/commenting-on-specific-section

Feature/commenting on specific section
Add comment list service for fetching the comments.
Add comment list controller
Add comment list directive
Add Angular animate
Make comment adder add the comment to comment list straight away
Add animation when comment adder box is appearing