Handle "Any Server" when filling Verdict Category list and Project List auto-completion.

Change-Id: I927cbc01710e04c9f4aa257d33a5e09e228c5244
Avoid duplicates when loading project list of all servers.

First add to HashSet, then to ComboBoxModel.

Change-Id: I4c98a8d4040b9ae25423b431044551b0fd9bd832
Merge pull request #98 from mathieu-wang/any-server

Handle "Any Server" when filling Verdict Category list and Project List auto-completion.