MDL-43109: mod/wiki - When editing pages populate the default value for the tags input.
MDL-43306 restore: fix grade item sortorder restoration

Previously, restore was blindly inserting the old sort order into the
database, causing duplicate sortorders which lead to unpredicatble
sorting results.

Now we will use the api function to add it after the original sortorder,
this means if a duplicate exists in the original location, this item
will appear after it.
MDL-37972 Assignment: fixing settings link for upload single submissions
MDL-43135 Guest Enrol: new language string for with key icon

AMOS BEGIN
CPY [pluginname,enrol_guest], [guestaccess_withpassword,enrol_guest]
CPY [pluginname,enrol_guest], [guestaccess_withoutpassword,enrol_guest]
AMOS END
Merge branch '25STABLE-wip-MDL-43135' of https://github.com/jennymgray/moodle into MOODLE_25_STABLE
Merge branch 'wip-MDL-43279-m25' of git://github.com/marinaglancy/moodle into MOODLE_25_STABLE
Merge branch 'MDL-43252-m25' of git://github.com/sammarshallou/moodle into MOODLE_25_STABLE
MDL-43258 theme_bootstrapbase: Style coursebox info name better in Bootstrap themes.
Merge branch 'MDL-43258' of git://github.com/lazydaisy/moodle into MOODLE_25_STABLE
Merge branch 'MDL-43071-MOODLE_25_STABLE' of https://github.com/lucisgit/moodle into MOODLE_25_STABLE
MDL-43218 navigation: Remove link to blogs when they are disabled
MDL-43218 blog: prepare the blog navigation only when needed
Merge branch 'w50_MDL-31410_m25_paypalipn' of https://github.com/skodak/moodle into MOODLE_25_STABLE
MDL-31410 paypal: fix problem on notifications

This commit fixes a PHP warning about using a
unititialised variable and also the problems when
notifications are enabled and there is not yet a
teacher in the course, defaulting to admin for student
notifications and preventing teacher notifications to happen.
MDL-34321 Assignment2.2 - Fixing submission count
MDL-42973 fix MUC caching issue when fetching available updates
Merge branch 'mucupdates25' of https://github.com/skodak/moodle into MOODLE_25_STABLE
MDL-36984 Assign: Add redirect after saving grades
MDL-42085 Enrol: Always apply enrolment duration.

Before the fix, the startdates and duration fields were integrated to HTML code only
when the user clicked on the collapsible region to see them.
It was wrong because their values were not sent by the form
if ever the user didn't expand this Enrolment options region.
MDL-40436 block_course_list: Fix bad context resolution

We were trying to get the course context of a remote course
from a completely unrelated ID. It would sometimes work if the
ID was matching the one of a local course. In other places
we are not trying to find a context for the remote course, we
simply use the $PAGE context in format_string. So the usage
of the context has been removed here too.