Adding check_code section to Makefile (to run pep8 and pyflakes).
Updating spanish translation.
Limit view of course metrics CSV to only superusers and Karen
Cleanup from merge/move of lernanta files.
Started detailed csv export for just superuser and certain users.
Added last_active and deleted mockup code for organizer quick view
Moved csv mockup to export_detailed_csv
Making Sqlite default db bakend for development.
Saved start of getting users' comment counts for course
Removing javascript error related to farbtastic.
ASCIIMathML support for UCIrvine courses (and any math group/course on p2pu).

* http://www.wjagray.co.uk/maths/ASCIIMathTutorial.html
Added lernanta sqlite db to .gitignore
Added time on page
Tweak to CSS for hints on organizer quick view tab
Updated language files
Added more information about how time on a page is calculated
Improvements to the notifications edit page.

* Group by setting so it is easier to read.
* Make a difference according to the role that is generating the notification (organizer, participant).
* TODO: Include signup notifications on the conf.
Added start of tracker app. Updates userprofile's (new) last_active.
Narrowed what's tracked to groups
Added time on page