Added Jitsi license header.
Test the database connection more thoroughly

If the HSQLDB lies on a network share and the computer went into
standby, the connection still indicates that the connection is valid
while it actually is not. Check if a SELECT is posssible and recreate
the connection if not.
Update sdes4j to 1.1.3
Update libjitsi to 5c27d77ffdda40a255eef19d7588e0822c282923
Fixes a problem where we cannot start configuration service when using not writable or not accessible folder locations.
Disable MCL tests as they fail and need to be rewritten
Update libjitsi 5c27d77ffdda40a255eef19d7588e0822c282923

(Recommit, previous binary was built against Java 8)
Fix the disappearance of external contact sources
Disable XML external entities before parsing.
Updates fmj to r93.
Revert "Disable XML external entities before parsing."

This reverts commit b1e75a29614352a74693c838be234238aaa2fb0f.
Adds NPE check.
Makes possible to insert/remove global statuses other then online and offline.
Does not show statuses other than Online/Offline when there is no provider to support them.