MDL-40259 - For SCORM reports limit fields returned from
get_users_by_capability to user ID to decrease memory utilization
MDL-39741 Use CSS class dimmed_text instead of hidden in grader report
MDL-40353 fixed wrong redirection on course group page
MDL-39741 removed unused css classes
MDL-40344 navigation: expandable branch id is now properly unique
MDL-40297 Hide empty categories in my courses

This is a followup of MDL-38631 were was detected that
whith categories being displayed in my courses, some of
them, not having courses for the user, were still shown.

With this patch, any category in the tree, not having courses
is automatically hidden, any depth.
MDL-40297 whitespace, comments & var names cleanup
MDL-39733 xhprof: implement export of runs
MDL-39733 profiling: UI for exporting runs
MDL-39733 profiling: UI for importing runs
MDL-40039 webservices: Add support for alternate to contextid parameter to core_files_external::upload()
MDL-39212 css: we now chunk and no longer separate
MDL-40282 Collapsible editor loses border in IE8-9
MDL-35206 Fix the links list enumeration in the html2text library
MDL-40069 Document editing form changes
MDL-40069 question/type/upgrade.txt editing changes

Try to more clearly document what question type authors need to do to
upgrade their question types.
MDL-19390 user: fixed typo during integration
Merge branch 'MDL-35206-email-links' of git://github.com/mudrd8mz/moodle
Merge branch 'wip-MDL-39741-master' of git://github.com/marinaglancy/moodle

Conflicts:
	theme/bootstrapbase/style/moodle.css
NOBUG: fixed whitespace