Added move command

If the server supports to move a CmisObject, the mv command can be executed
Basic move operations are tested in the CompatibilityIT.java
Added getContentChanges command "changes"

The new command prints out all changes, which has been made, since last time
Bugfix CompatibilityIT
IT: saver cleanup
Next try to create a clean IT move test
Merge commit 'ddf83d8a7f5afd8fc9028360109af1c2866995da'
Releasing new candidate 0.5.93