MDL-38480_m Fix for messy usage of language strings in block course overview
MDL-39399 theme: Missing expand/collapse icon in clean
MDL-39399 theme: RTL styles for collapse/expand in forms
Automatically generated installer lang files
MDL-39435 feedback: Fix missing calls to setType
MDL-38714 Lesson module: add setType for hidden and text inputs
MDL-38315 Completion: Bugs with 'locked' status in activity form
Automatically generated installer lang files
MDL-32913 core_grade:made it more obvious when the gradebook is broken due to a broken calculation
MDL-38717: Lesson mod: fixed behat script to accomodate the fix of settype()
MDL-39442 Do not use native rename() when moving folders

The native rename() function does not support moving folders
cross-device. See https://bugs.php.net/bug.php?id=54097 for details. So
instead of trying to move the whole tree, the new installer's method
moves files recursively one by one.

This is consistent with what mdeploy.php already does.
Merge branch 'install_master' of git://git.moodle.cz/moodle-install
on demand release 2.5beta+
MDL-39472 MUC: Improve parse_key performance
MDL-39445 get_plugin_list clean_param use is slow

get_plugin_list was calling clean_param($pluginname, PARAM_PLUGIN) a
lot (600+ times per page), and that is much slower than you would guess.
A specific function for this case, (which we then also use from
clean_param) is a performance win.
MDL-39446 calculated qtype: make answer formula input bigger

This makes it easier for teachers editing questions.
MDL-39450 course formats: add static cache to get_format_or_default

This function gets called hundreds of times on every page, often with
exactly the same input, so I added a static cache.
MDL-39412 question behaviours: hide manual graded option

The ability to set all your quiz questions to require manual grading is
an interesting possibility, but practically almost useless.

If you set that accidentally, then you are badly stuck. There is no way
to fix it after the students have answered the quiz.

Therefore, we should set the config option to hide that option from the
UI. We do this for all Moodle sites as part of the upgrade, not just for
new installs.

If any admin wants to re-enable this, they can later.
MDL-39318 CSS bug on mouse hover of paging bar in some themes
MDL-38594 Core themes changed for the new course listings styles