[1131896] multi-click on New Dashboard button creates dashboards with the same title

Prevent multi-click by disabling button until prior DB is created.

(cherry picked from commit f102c310bec236b2632c94f799219465c523cdfa)
Signed-off-by: Jay Shaughnessy <jshaughn@redhat.com>
[1131886] Save button styling is inconsistent for configuration and for connection settings

This is a cherry-pick of the commit for upstream "[BZ 1132399] - Plugin config for group has the save button on the top
placing both buttons on the bottom of the page and making them blue."

The upstream fix covers this BZ and also adds a bit more useful stuff.

(cherry picked from commit 34a688617a87efffd4f5c7cca550f85ec39f979f)
Signed-off-by: Jay Shaughnessy <jshaughn@redhat.com>