* Add activity, activityformat, timelimit and submissionattachments to mod_assign_get_assignments
* Add timestarted to mod_assign_get_submissions and mod_assign_get_submission_status
* Add assignmentdata to mod_assign_get_submission_status
* Move mod_assign external helper methods to an external_api child class to be used with modern external classes
* Add start_submission external function
* Create mod_assign child class of externallib_advanced_testcase for shared helper functions
* Add extra logic to get_assignments on whether to provide intro
attachments.
This patch adds lots of webservices to the assignment module.
* mod_assign_revert_submissions_to_draft
* mod_assign_lock_submissions
* mod_assign_unlock_submissions
* mod_assign_save_submission
* mod_assign_submit_for_grading
* mod_assign_save_grade
* mod_assign_save_user_extensions
* mod_assign_reveal_identities
* mod_assign_copy_previous_attempt
All features such as reopening attempts and marking workflow are supported through
the save_grade and save_submission functions.
Uploading files is supported by sending draft item ids for the files_filemanager param the same functions.
Andrew Madden