First pass at converting scatter view to d3.

Original functionality replicated - now with user name hover, as well as click summary tooltip.

TODO:
* Replicate for timeline view.
* As all data has been retrieved through API, only refresh graph on axes change.
* Prettification.
Timeline view now switched over to D3.

Line plots highlight when appropriate legend is mouseovered.

TODO:
*Reduce y-axis options, and test all x-axis options.
*Integrate new activity reports into timeline.
*Use Raphael to give IE backwards compatibility.
Clean up of cruft.

TODO:
See last commit.
now generate user usage logs.
add version not just to fields, but also to models.
this only works when we increment the version :)
missed this critical change for getting syncing to work; not having this breaks... everything\!
Merge branch 'user_logs_syncing' of github.com:bcipolli/ka-lite into user_logs_syncing
Merge remote-tracking branch 'upstream/develop' into user_logs_syncing
Merge branch 'user_logs_syncing' of github.com:bcipolli/ka-lite into user_logs_syncing
resolve sync warnings
Merge remote-tracking branch 'upstream/develop' into IDOC_coach_reports_jQuery

Conflicts:
	kalite/templates/coachreports/timeline_view.html
migrate to updated schema
removing cruft
Merge pull request #2 from bcipolli/IDOC_coach_reports_jQuery

Merge to develop, remove a bit of cruft.
update for subtitles as well.
Several tweaks in the Windows scripts
Removal of merge conflict "HEAD" items.

Moving endjs block out of content block to prevent repetition of graphs.
Fix PORT
performance: deactivate cherrypy autoreload - add option to allow autoreload