fixes #1783 - Default template set incorrect snippet names if snippet name uses underscore

fixes #1736 - fixes odd errors with db migrate

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