Fix blankText for valueset
[NEXUS-7707, NEXUS-7711] update fonts for error/content/describe pages
Disable messages panel and toggle
Merge pull request #881 from sonatype/disable-messages-button-panel

Disable messages panel and toggle
Slight API change

Cleared up when and how to refresh taskState.
Adapter to core API changes and improvements

Lessen quartz queries by handling states atomically. Also, futures
are not pushed by listeners, making it possible for callers
to actually get them.
Merge remote-tracking branch 'origin/master' into NEXUS-7292-scheduler-rework