Partial probing support for data table.
probe is visible now
getVar() renamed to getValue() and now supports expressions
Squashed a few odd visual probing bugs in DataTableTool
Hide CytoscapeWebTool from the menu again, it's not ready yet.
Merge remote-tracking branch 'origin/master' into datatableprobe
fixed error when accessing toString() or hasOwnProperty()
fixed bugs with enabling/disabling buttons
Added support for async task immediate priority

Change-Id: Ie7e48b23a468844adca1e02a460eff55d4c619fc
simplified code, taking advantage of new automatic unbusy trigger

Change-Id: Ie3243180599732ff7d546aff9311e994a6568c22
now using async task w/ immediate priority for unbusy trigger

Change-Id: I63598d67a0a0dfdd9f3cb0e523390e0b6d72d75e
added code in comment
updated docs
improved image plotter code
performance improvements
hack to color anchors
enhancing ui elements in Radviz
merging master into fkamayou