MDL-35032 mod_book: 1.9 backup restore convertis files to book area
MDL-43250 Assign: separate groups mode fix

When in separate groups mode, only get graders in a group that is in the course module grouping.
MDL-30195 portfolio_googledocs: Allow export of rich HTML
MDL-43438 mod_assignment: Prevent double inclusion of plugin files
MDL-41246 cache: Fix PHP notice of non well formed numeric values for the memcache store
MDL-41788 theme_bootstrapbase: Custom menus - sub-menus breaking.
MDL-43318 Assign: Fix bug when editing previous attempt feedback
MDL-43367 stop returning of bogus context children when path unknown

This also prevents deletion of system context.
MDL-43314 make float serialize consistent on all systems

This should resolve problems with plugin version change detection.
Merge branch 'MDL-34182-26' of git://github.com/andrewnicols/moodle into MOODLE_26_STABLE
Merge branch 'MDL-43325-26' of git://github.com/andrewnicols/moodle into MOODLE_26_STABLE

Conflicts:
	lib/yui/build/moodle-core-notification-dialogue/moodle-core-notification-dialogue-min.js
MDL-34182 js: fixed typo in ajaxException use
Merge branch 'MDL-43318-26' of git://github.com/damyon/moodle into MOODLE_26_STABLE
Merge branch 'w52_MDL-43367_m26_contextpath' of https://github.com/skodak/moodle into MOODLE_26_STABLE
Merge branch 'MDL-30195-26' of git://github.com/FMCorz/moodle into MOODLE_26_STABLE
Merge branch 'MDL-35032-26' of git://github.com/FMCorz/moodle into MOODLE_26_STABLE
Automatically generated installer lang files
Automatically generated installer lang files
Merge branch 'MDL-43410-26' of git://github.com/andrewnicols/moodle into MOODLE_26_STABLE
Merge branch 'MDL-43250-26' of git://github.com/damyon/moodle into MOODLE_26_STABLE