Add old gitignore lines back
Add old gitignore lines back

This way when a developer checks out the rails subfolder branch they won't see a ton of extra files
which are no longer ignored. Once the rails subfolder is normal then these lines can
be removed, and developers can clean up the old files.

concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse