Adding point sensitivity analysis to radviz.

changing the destroy R process function in Rservice from private to
public so that it can be called from a client...
Merge branch 'master' into fkamayou
workaround for voronoi bug
added option to probe for annuli
fixed bug where ColorRampEditor was shown as disabled
Copying generic changes from aws branch.
fix null pointer error.
Panels now have thin outer borders.
added if statement to prevent extra work
Code cleanup, and fixed bug in line chart probing.
line chart code & GUI cleanup

Change-Id: I5d62a22d0ee698c39037668f02c9f4c889ab377e
fixed line chart geom probing bug created in previous revision

Change-Id: I73f7c0df615a9e1bae65667e2dd7fb075ccc4791
added updateError()

Change-Id: I6a07a1ab34c7ab3aa26a0d3bd83902b86d561ce3
Added error messages to line chart grouping controls.
Fixed bug where axis click wouldn't edit correct attribute.

Change-Id: I3b20d9c75aa61c47b3a058f865b388fcd92b8096
fixed bug where tool right-click csv export didn't work
working on the annuli
Fixed crash bug when data grid item editor had focus and escape key was
pressed to close the DraggablePanel containing it.
ErrorLogPanel: "Show all menus" is now "Show all menus and controls" and
enables tool control panel buttons.
control panels and session editor now reposition each time they are
opened with a button click.
fixed compiler error