Remove prefixed backslash
Replace this for drush.
Minor fix.
Don't set the vsite prefix to the courses alias.
Merge pull request #6550 from openscholar/3.15-6475

3.15 6475
#6483 3.15: Don't bind feeds vocabs with the current group.
Merge pull request #6555 from openscholar/SCHOLAR-3.15-6483

#6483 3.15: Don't bind feeds vocabs with the current group.
Fix merge conflicts