Remove Vault info message from permpluginmanager so that all the
messages come from the same place. All dependencies should be handled
the same way.

Signed-off-by: Staartvin <mijnleraar@msn.com>
Make Vault a softdepend so it does not error with scary lines of code
when Vault is not found. Instead, an error in the console is shown when
Vault is not installed.

Signed-off-by: Staartvin <mijnleraar@msn.com>