MDL-44590 category: correct get_string component
MDL-44590 behat: Add test for course category idnumber duplication
MDL-44670 theme_clean: Updating screenshot
MDL-44822 assignfeedback_editpdf: Stop test generation in is_enabled()

This change also moves one of the checks in test_gs_path. If
generateimage is false, there's no need to stat for the fixture file.
MDL-43284 Theme: Clean theme errors with padding in Question Bank fixed
MDL-44824 add missing subplugin type names
MDL-44824 add missing subplugin type names
MDL-44701 gradereport_grader: Display warning on navigation if unsaved grades are present
MDL-43398 Wiki: Choose... options cause SQL errors or seen inappropriate.
MDL-43398 wiki: remove extra Choose... option from select
MDL-35305 wiki: backup and restore files

Thanks to Tatsuya Shirai for the patch
MDL-44843 try to hack around strict locale names in OSX
MDL-41102 report_performance: correctly check state of automated backups

Thanks to Renaat Debleu for the patch
MDL-31262 fix quiz review capability check.

This change is logically the same as changing
    $this->has_capability('mod/quiz:viewreports')
to
    $this->has_capability('mod/quiz:viewreports') || $this->has_capability('mod/quiz:preview')
in the original code. However, I rewrote the logic so that we test the
most common and performance-critical case first - that of a student
lookign at their own attempt.
MDL-44746 core_events: removed incorrect use of snapshot
MDL-44746 core_events: minor changes to the user_deleted event
MDL-44862 always add dbport to dbsocket in pg driver

This should hopefully resolve problems when using sockets connection
to pg servers running on non-standard ports.
MDL-41063 Lesson qformat_default class is missing an error function
MDL-44862 postgres: tests to support socket & port

Both the database auth and enrol plugins use ADOdb
to perform connections. Socket and port are allowed
there if passed as "socket:port", so, when both are
configured in CFG, we pass them that way. Else
ADOdb defaults to standard port (5432).
Merge branch 'MDL-44822_26' of git://github.com/aolley/moodle into MOODLE_26_STABLE