minimal fix for unexplained db migrations failures, refs #1736

refs #1589, ensure that vmware public key is automaticilly imported when testing connection

fixes #1729 safer migration code.

avoid breaking mysql migration from an empty db

missing syntax

Fixed migrations for mysql2

ensure that migration script is a bit more rubost for audit uses, refs #1700

(sadly the audited gem alias the .user method, and sometime returns
strings and other times return a user object)

fixes #1700 audit page performance improved

• Added auditabale name and associated name columns.
• Added username to audit table

Merge pull request #84 from logicminds/1703

fixes 1703 - add ok hosts as bookmark

fixes 1703 - add ok hosts as bookmark