Rename sql updates to match new version

EV-182

Since the next release involves big changes, we decided to change
the version number to 3.0
Fix releaseDue email

EV-182

The releaseDue email text had been updated for all appointment types.
Modiifed the code to use different releaseDue email text just for the
professional faculty appointment types. Also fixed a bug that was
preventing the email from being sent in the backendmgr.
Merge pull request #44 from osu-mist/feature/EV-182-releasedue-email

Feature/ev 182 releasedue email