Significant string changes:
* courseoverviewfiles, courseoverviewfiles_help, courseoverviewfilesext
in core, configcourseoverviewfilesext, configcourseoverviewfileslimit
in core_admin, areacourseoverviewfiles in core_repository - renaming
of 'Course summary files' to 'Course image'
Significant string changes:
* completionpass_help, gradetopassnotset in mod_quiz - grade to pass set
in quiz settings not gradebook
* namecolumnmissing,core_cohort - fixing incorrect message about adding
users to a cohort
Some webservice functions need to be available without a login, e.g.
fetching strings and templates.
External functions must call validate_context if they require a valid login etc.
Added a new parameter to services.php: "loginrequired". Default is true.
This is a new script that can call any function in the built-in AJAX webservice. This is
a new system service that is added at install time (like the mobile webservice). It has no
protocols added to it, but it accessible by a new ajax script /lib/ajax/service.php.
Requests and responses to the script are required to be in json format, and multiple functions can
be called in a single request.
1. Implement core_course_get_contents web service
2. Implement callbacks in folder, resource, page and url modules
3. Implement download script for web service