Remove JS link handling

The original intention was to have the header link to the first unread
comment like pressing “o” does.
Merge branch 'fix-click-header'

* fix-click-header:
  Remove JS link handling
Fix for viewing loaded notification
Make detail views self contained
Cache detail views
fix selection and keyboard events when going back
Merge pull request #76 from bkeepers/back-and-forth

Fix for going back to viewed notification