When, for example, adding accounts to a group the drop down list would
also suggest inactive accounts. Exclude the inactive accounts from the
suggestion.
NOTE: suggesting of reviewers doesn't have this issue as this is a
different code. Ideally, suggesting accounts and suggesting reviewers
should be refactored to use the same suggestion algorithm. However,
this would be a larger change and better suited for the master branch.
Change-Id: I6bd22739c326a77dbf6fc3f36ee245d9e6939e34