Added UCLA queries used to generate our Activity report.

* Also added new config parameter called TERM_START used by our activity query
Merge pull request #2 from rlorenzo/ucla_queries

Added UCLA queries used to generate our Activity report.
Add option to use “internal Moodle” for courses.  The option to use
the internal total must be uncommented to for use.
Add option to use “internal Moodle” for courses.  The option to use
the internal total must be uncommented to for use. moodle21 changes.
Updated comment syntax.
Added new site variables, made 1.x queries cascading, made title's more friendly.
Renamed templates/moodle2 queries to be more descriptive.
Minor changes made after testing queries.
Merge remote-tracking branch 'github/master'

Conflicts:
	site_variables.ini.dist
Fixed query after site variable changed from TERM_START TO TERM_START_DATE
in merge conflict resolution
Changed text on query titles for 2 and 3.