Attempt at fixing strange Chrome problem with in-line reports.
Merge branch 'master' of http://github.com/Stanford-Online/class2go into
dca_new_working2

Conflicts:
	main/templates/reports/in_line.html
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Work for #2130 (Parameterise values for quizzes summary in-line report).
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Added example reports some of the report tabs.
inline report functionality and style changes
Fix unit tests, code for registration process

* Makes c2g unit tests for registration process pass
* Makes code and unit tests agree about policies
* Enables c2g unit tests for registration process during default run
* Doesn't touch non-c2g registration unit tests, and a number of those
  are still broken
Import os in database_example
(closes #2196) Only do the unsaved changes check for non-video pages
In-line report; more changes.
Merge pull request #2203 from Stanford-Online/jrbl-2176-database_example_os_fix

Import os in database_example
made clock more mobile and resource friendly
In-line reports; more bug fixes and style tweeks.
In-line reports; the final cleanup.
stop running obsolete problemset tests (were skipped anyway)
fixed landing page css bug
Merge pull request #2201 from Stanford-Online/jrbl-registration_unit_tests

Fix unit tests, code for registration process