MDL-46315 themes: Fixed display inconsistancy with help modals
MDL-46470 bootstrapbase: support linkedwhenselected attribute for tabs
MDL-46643 calendar: improved tab order of calendar detail pages
MDL-44015: EditPDF scrolls instead of drawing on iOS
MDL-46676 profilefield_datetime: Use moodle time API
MDL-46600 core_grades: made it explicit in the error message that a failed grade import means nothing was imported.
MDL-21042 report_security: don't display warning for riskbackup unnecessarily
MDL-46681 qtype_multichoice: disabled unused options

For questions set to 'One answer only', the 'Clear incorrect responses'
and 'Show the number of correct responses' hint options make not sense,
and are not used. Hence we disableIf them.
MDL-46480 fix get_htmlelement_size() to deal with hidden or non-block elements
MDL-46737 SCORM: correct dml syntax.
MDL-46718: Return user to last accessed page when quick grading
MDL-46496 JS: Replace jQuery UI 1.10.3 minified CSS

The original version contained some invalid paths for images. I'm unsure
where these came from as the version from the offical jQuery UI does not
contain these, and these were the only differences in the files.
MDL-30668 gradereport_grader: split user preferences into individual courses

This solves the DB exception when users were trying to insert very large string in DB
MDL-46688 weblib: improve the highlight function.

Thanks to Joseph Baxter for suggesting some of the test cases.
MDL-46308 qformat_xml: fix import of broken calculated questions.

Questions like this should not exist, of course. But they do, so we
should avoid generating errors in this case.
MDL-35984 grade: Add behat tests for grade aggregations
MDL-35984 grade: Recalculate min/max for sum of grades when hidden grades are involved.
MDL-35984 Grades: Fix deprecation of grade_category::aggregate_values
Merge branch 'wip-MDL-30668-m26' of git://github.com/marinaglancy/moodle into MOODLE_26_STABLE
MDL-43740 core_grade: Thanks to Robert Russo for the patch. Removed the ability to set manual grade items to grade type "None"