remove asterisks on setconfig in mv

Hide asterisks through CSS
Test the appropriate element
Check for endpoints in response, displaying error message properly
Root containers are droppable.
Merge pull request #556 from jaycee/drag-and-drop-mv-reloads-page

Root containers are droppable.
Merge pull request #555 from makyo/add-subrel

Display an error if Juju will not allow a subordinate relation.

Check for endpoints in response, displaying error message properly; fixes 1369606
Only count the non-subordinate units when showing the undeployed unit count in the deployer summary
Merge pull request #547 from makyo/uncommitted-asterisk

Remove asterisks on setconfig in mv
Added test for excluding subordinate units in the deployer summary counts
Merge pull request #557 from hatched/subordinate-counts

Exclude subordinate units from the deployer bar summary counts.

The subordinate units were included in the counts for unplaced units to deploy in the deployer bar summary. This makes sure units which are from a subordinate service do not get counted.