Create saved work model
Add/remove functionality for saving works for later, plus basic work presenter start
Basic saved works index page
Delete saved works with js from index page
Update tests for marked for later move
Clean up saved works when work is deleted
Add missing li in sidebar
Fix missing subscription form
Updating saved works navigation markup as per sarken
Updating classes at sarken's request
Merge master, resolve conflicts
Remove unnecessary assignment
Issue 3996: Fix for broken single-chapter mobi files
Merge pull request #1672 from elzj/kindle_angst

Issue 3996: Fix for broken single-chapter mobi files
Merge pull request #1530 from elzj/issue_2495_move_marked_for_later

Issue 2495: move marked for later
Change mobile font size to 14
Fix attribute name in after task
Clean up marked for later references, tweak wording
Make spelling consistent
Merge pull request #1680 from elzj/issue_2495_move_marked_for_later

Issue 2495: Saved works tweaks