Cleared FEATURES file (replaced by a reference to online docs)
Fixed bug #54 (error in cron execution if course and activity completion are active).
Bumped version to 2.4.3+ (2013050901)
Radically changed the query for retrieving all users whose online session could need update (issue #56)
Mooved $completion->set_module_viewed before sending headers (fixes issue #57)
Bumped version to 2013.07.06.01 and updated whatsnew
Update WHATSNEW.txt
Update WHATSNEW.txt
Merge branch 'origin/master'

Conflicts:
	WHATSNEW.txt
	version.php