Support starting the maven build from a directory distinct from rhq root
directory
[1064332] Horizontal size of the dashboard's left panel gets stuck after changing verticle panel size
When we removed the borders from the dash columns it made it very difficult
to grab anything for horizontal (i.e. width) resize.  There was only a
small, invisible area at the '+' shaped intersections of portlets.

Add back a 1px border, but make it transparent to keep the patternfly l+f.
Although the border can't be see, now when hovering over the border the
resize icon appears more readily.
[1043099] Add new autogroup chart to dashboard shows empty chart in dashboard
Disable the ability to add Autogroup or Autocluster metric graphs to the
dashboard.  It doesn't work because the portlets don't support them, and
these types of implicit groups should not be referenced outside of their
Tree navigation context. Despite being persisted they are maintained only
at click-time.
[BZ 1139267] - Undeploy Selected button on Storage Nodes page is disabled so it's not possible to remove second storage node - there was an error when checking if the storage node is available
Bug 1142356 - take snapshot failure exception for down storage

We now detect storage service availability prior running operation
Changing the descritption for a system setting from value 'If not enabled, the coregui will block users that are not assigned to any role. This applies for both LDAP and normal users.' to 'If enabled, logins are allowed for users not assigned to any role. This applies for both LDAP and normal users.'
Merge pull request #119 from ppalaga/RHQ-build-from-anywhere

Support starting the maven build from a directory distinct from rhq root

Merging this PR as the Java 7 dependency (on java.nio.file.Path) is only during the build time for the C* Groovy script where we already assume Java 7
[BZ 1126410] Update data migrator to use the latest storage node schema.