MDL-37333 theme: Fix 'Clear theme caches' redirect.
MDL-38837 badges: Check for http or https in badges backpack support
MDL-40295 wiki mod: fix set_url() error for printer friendly page.
Additionally, fix wiki pagelayout for printing
MDL-35851 lesson: Handle importing questions into an empty lesson.

Also - make sure the page we are updating belongs to the lesson.
MDL-40315 behat: Performance improvement

We look for exceptions after each step, this patch
includes a pre-checking query to avoid multiple queries
for each step when most of the time they are not necessary.
Merge branch 'install_25_STABLE' of git://git.moodle.cz/moodle-install into MOODLE_25_STABLE
weekly release 2.5.1+
MDL-40626 gradebook: Prevent incorrect override with multiline feedback

The quick grading option doesn't allow mutliline editing.
MDL-33563 Grading methods allow decimal grades
MDL-33563 Version bump for grading methods API change
MDL-38707 Display module name when the folder is displayed inline
MDL-38867 remove Google spell checking option
MDL-39635 behat: Fixing line breaks

Not supported by Windows OSs.
MDL-39635 behat: Replacing hardcoded language strings

Using get_string() instead.
MDL-39635 behat: XPath cleanups

- Escaping steps arguments redirected to other steps
- Adding normalized-space() in all contains() assertions
- General xpaths review
- Convering provided xpath text strings to xpath literals
  to avoid problems with arguments containing both single
  quotes and double quotes
MDL-40123 behat: Show all of form's elements changes.

* Avoid waiting until Show more... links appears if we
  already waited.
* Use collapse/expand button rather than clicking on
  each of the form's fieldsets.
MDL-20609 quiz tables: improve layout for long cell contents.

By allowing more wrapping.
MDL-40480 tablelib: specify charset in XHMTL downloads.

Thanks to Jürgen Zimmer for the suggestion.
MDL-40785 question instances report: ignore subquestions

We should not count subquestions of cloze questions (parent != 0) but we
do want to count random questions (parent = id).
Automatically generated installer lang files