Merge pull request #12 from thomasstache/session-tableview

Tabular listing of all sessions
Reduce background opacity of FileRepository dropdown
Merge branch 'session-tableview'
Update Handlebars library to 1.3 (from hbs 0.8.1 package, but leave hbs at 0.4)
Implement sort direction indicators for table column headers
- apply classes to markup of sorted table column
- draw sort arrow/triangle using CSS borders on generated content
Select sessions from the "All Sessions" table
- linkify the session IDs
- when a link is clicked trigger a search for a session, reusing the searchbox infrastructure
Cancel button for file drop veil, in case it get's stuck
Drop handler should check that files have been dropped
Allow to just hide the "All Sessions" view, retaining sort and scroll state
- make the SessionTableView a member of AppView, keeping a reference to it when hidden
- when the view is re-shown update the sortable collection from the current sessions, in case more data was loaded
Tweak cancel button style
- add a background, make the white less harsh
Invert the default sort direction when clicking a column header
- descending appears more useful to me, especially for probabilities/distance/speeds
Merge branch 'master' into session-tableview