MDL-42618 fix grade importing of whitespace idnumbers
MDL-34020: Further work on IMS package importing when using Blackboard packages
MDL-43109: mod/wiki - When editing pages populate the default value for the tags input.
MDL-43369 : quiz statistics - average across attempts

where item seen and not across all attempts for subqs.
Automatically generated installer lang files
Automatically generated installer lang files
Automatically generated installer lang files
MDL-43460 calendar: Decode event description links on restore
MDL-39661 blocks: Removed notice when moving a block
MDL-40705 theme_bootstrapbase: Handling of long words in block content
MDL-39603 theme_bootstrapbase: Alignment of filter form elements on enrol page
MDL-43412 quiz with grade period and password did not work.

Once the attempt became overdue, it was impossible to get in to submit
it because of a redirect loop. This fix resovles that loop, so the
student can enter their password and get in.
MDL-43590 Merge English strings from the en_fix language pack
Automatically generated installer lang files
MDL-41152 theme_bootstrapbase: Optimise width for gradebook tree view
MDL-43371 mod_lesson: Remove files upon page or module deletion
MDL-43401 mod_lesson: Fix serving of the pluginfile mediafile
MDL-36721 make upgrade queries cross-db
Merge branch 'install_25_STABLE' of git://git.moodle.org/moodle-install into MOODLE_25_STABLE
weekly release 2.5.3+