WOBS-2944: Updates time_updated field for articles when toppics are changed

We forgot to port this
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'upstream/master'

Conflicts:
	newscoop/admin-files/articles/topics/do_edit.php
WOBS-3381: Replaces manual check if webcode exists with internal getWebcode() method
Merge branch 'master' of github.com:m038/Newscoop