Commit for MDL-29663 that renames the FORUM_TRACKING_ON constant
to FORUM_TRACKING_FORCED to allow easier and more consistant reading.
FORUM_TRACKING_ON retained but marked depreciated.
Converts the use of Read Tracking On to Forced. Adds new admin setting
forum_allowforcedreadtracking. If set, Forced will be available when
adding or editing forums. In this state the forced forum overrides the
user preference of off.
With forum_allowforcedreadtracking not set (default) behavior is the
same as now, except forums previously set in the On state are treated
as Optional.
The side effect of forum_allowforcedreadtracking being on, is that users
cannot speed up the loading of course pages with lots of forums by
setting their personal forum read tracking option to off.
Non-standard means php.ini was set to something not in the default list (like 7MB),
then the config was saved to that specific value, and now the value in php.ini has been changed
again so 7MB does not appear in the list.
set the maximum number of attachments for forum posts. Default: 1.
Works, but still needs a bit of polishing to deal with re-editing posts (to stop people going above maxattachments)
Also fixed documentation for attachments.