Fix for issue #473 - sensical timeline graphs depend on time sorting of log objects.
Merge pull request #497 from rtibbles/coach_reports_efficiency

Coach reports efficiency
Super happy to have this in--great outcome from the performance bash!
Also a note to @jamalex--in the heat of the night, I didn't make time to praise you for your uber work on your merged changes; great to have support for IE8 (and below for playing videos), and excited to be on the cusp of the mobile player support!  Awesome!!
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into debug_toolbar

Conflicts:
	kalite/coachreports/api_views.py
Fix Central Server URLs.
Manually re-applying missing changes lost during the merge in cc07c33.

Problematic merge:
https://github.com/bcipolli/ka-lite/commit/cc07c333cffc1a96d59c9df57c7521d6b32cf384
removing cruft, duplicating changes to videos
Fix for #374 - make exercise display name the exercise title in tabular coach report.
tweaked ordering of local_settings/settings, always use db-backed mem cache for sessions, simplified decorator for profiling API calls.
Merge pull request #510 from jamalex/resolve_merge_patch

Manually re-applying missing changes lost during the merge in cc07c33.
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into release-0.10
tweak urls inside the kmap editor, to reference directly. No more hackish than redirecting the urls already.
Merge pull request #494 from bcipolli/debug_toolbar

Add Django debug_toolbar (when USE_DEBUG_TOOLBAR=True); allow INSTALLED_APPS (& more) in local_settings
Fix for #466, show [no groups] in group selection navbar when facility has no groups.

Reinstated previously removed +1 from adjustment for header row height for user list table.
sub-commit for install wizard, may be broken with following sub-commits.
sub-commit, definitely won't work (requres packaging changes), but useful for application to update_all
sub-commit 3 of 3; the rest of what i've been working on. probably not working quite yet, but close.
sub-commit, definitely won't work (requres packaging changes), but useful for application to update_all
Real-time updating of "total points" in top-right corner of screen.
Merge pull request #514 from rtibbles/coach_reports_fixes_0.10

Use exercise titles in tabular coach report, add [no groups] indicator for group selector navbar in coach reports.
removing extra slash