- show no active sessions as own column, prettier that way
- check if spectrum2 is correctly answering or at least not saying unknown command before trying to parse information from response
- refactored gateway statistic values in gojaraadmin as we use this from interceptors and because of this needs to support concurrent access. 

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@13714 b35dd754-fafc-0310-a699-88a17e54d16e