The permissions check is not correct (even users with grade capability should not
see user identities) and $assignment->get_renderer() is preferred over $OUTPUT.
This is mostly fixed by MDL-36832 which correctly sets the $PAGE->url.
This patch hides the submit and textareas from submission comments in the grading table when
javascript is disabled and quickgrading is enabled. This particular combination results in a form
nested in a form which does not work (and cannot be fixed in a reasonable amount of time).
This change adds a function to the assign class to allow the permissions for a group submission
to be checked and updates all the submission plugins to call it.
This was preventing the view full submission/feedback link from appearing
everywhere in the assignment when the submission/feedback content had been
truncated in the summary because it was too long (or too many files)
Also move the 'default' setting for each plugin into it's own settings file
so that it is handled properly on new installs.
(ensure the plugin is available at setting time)
Also make the file submission plugin on by default
