Reset data - added rooms and buildings
Added demonstration of isolation levels.
Shown on Reservations inserts
removed some forgotten debugging output prints
Added aggregated data panel.

Following steps: 
1) remove aggregatedDataPanel from sqlPanel
2) add one more tab to application - here aggregatedDataPanel will be placed
3) solve automaticaly refreshing for this panel
4) solve automaticaly refreshing for sqlPanel
Merge pull request #3 from Noxxik/master

Aggregated Data & Isolation levels demonstration