Set grants correctly upon MySQL restore

Reset grants for the current MySQL user upon restore.

Fix https://bugzilla.redhat.com/show_bug.cgi?id=902184.
Fix typos in rhc instructions displayed to client
Merge pull request #1188 from ironcladlou/bz/902184

Merged by openshift-bot
Merge pull request #1189 from ironcladlou/bz/902178

Merged by openshift-bot