Merge pull request #38 from siordache/gui

GUI improvements: skinning, table rows filter etc.
Fixed build
3.1.0_pre2
version=3.1.0_pre3-SNAPSHOT
Release 3.1.0
changed master to 3.2.0-SNAPSHOT
Java 6 compatibility for monitoring-client
Merge pull request #39 from siordache/java6

Restore java 6 compatibility for monitoring-client