To constrain memory we only cache a single question's answers.
A quiz must display this many answers, so it will not result
in undue memory pressure.
We now match on the full answer text rather than the first 255
characters. This removes the risk of matching questions with the
same start.
This issue makes several fixes for the session loader and the session store.
* maxsize argument now works for session caches.
* fixed performance hole when interation occurs frequently.
* fixed cache purge bug occuring when multiple caches are defined before being used.
* improved lastaccess handling.
This commit moves user agent related functionality out of several
core libraries and combines it into a more manageable class.
All core uses are converted and functions deprecated in favor
of the new class.
This commit makes the following changes:
* Tidies up coding style.
* Tidies up phpdocs.
* Improve CSS optimiser unit tests to cover browser hacks.
* Improve backgound style consolidation.
* Improve border style consolidation.
* Fixed optimiser to handle browser hacks like *zoom.
* Improved @ rule unit tests.
* Fixed @rule breakages caused by OS specific rules.
* Added more unit tests to cover a bit more CSS3.
I am pretty sure this patch will now enable to optimsier to
work on bootstrap based themes should developers not wish
to compress thier compiled less CSS.
When doing Each attempt builds on last, we need to copy any response
files into a draft file area, and then re-save them.
While writing the unit test for this, I had to deal with a todo in the
question engine so that questions with files in the response could be
unit-tested.
I also found an fixed a bug with qtype_essay_question::is_same_response
and fixed some notices in the existing essay/manual graded unit tests.
List of fixes:
* Add a simulated drag start event to fix problems with block drag and drop that
were expecting it.
* Add an access-hidden title for the General section in a course format. This
is used to provide the text for the drop region (better than the first activity in the section)
* Changed the text in the list to 'Move to "General"' instead of 'Move after General'. This
makes more sense for activities when you have a list of activities and sections together.
