Conflicts:
	theme/bootstrapbase/style/moodle.css

Here we are replacing the unnecessary code used to create a course with
a call to create_course(), which triggers the event 'course_created'.
Nothing more is needed.

Before each of these calls a call to enrol_user() is made, which
triggers the event 'user_enrolment_created'. Nothing more is needed.

Before each of these calls a call to unenrol_user() is made, which
triggers the event 'user_enrolment_deleted'. Nothing more is needed.

This patch was inspired by patch by Simon Coggins from Totara.

Change-Id: Idf300ab07afda3bcefea80e617549f40c710e529

Conflicts:
	theme/bootstrapbase/style/moodle.css

Change-Id: Ifef563431682a2a5524927f85ca9eba9cbe520ff

Change-Id: Ibaf6f0a9dc29d00b97a32111d1cf5063ebed1888

Whether the comments on manually graded questions were visible to
students should have been controlled by the 'Specific feedback' Review
option in the quiz settings. However, the quiz was not setting
$displayoptions->manualcomment, so it did not work.

Not just pages with a visible footer.

This patch adds a new performance metric to the performance
info shown by MDL_PERF* vars, the time spent by the database,
it was one of the wonderful @poltawski ideas. To be more specific
the value displayed is the sum of the time elapsed between query_start()
and query_end().

It includes 2 more minor fixes:
- Escapes values sent to TinyMCE as it was breaking
  when values contained double quotes.
- Adding seconds to the screenshots directory to
  avoid using the same folder for multiple runs.