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
working on the annuli
computed inner and outer radius...
temp push
partially complete, still need to computer the center of annulus
merge with master:
Merge branch 'master' of https://github.com/IVPR/Weave into fkamayou
replacing the selector for the column names with a check box list
Added a plot for the annulus center
Adding option for drawing the convex hull of DAs
Sorting the anchors before drawing the convex hull
fixed in compare function returning a boolean rather than a Number
fixed histogram zoom bug

Change-Id: Ie7423da557f1288ddd4ac5fe79bbc90460a93d4b
fixed bug where applyDiff() was messing up session history in
setSessionState().

Change-Id: I9bd5b7704dead10b6d1e2c57f20a95ff77727c38
fixed bug with dataType metadata in dimension slider columns

Change-Id: Ia9da52ac4f2dd0861f9b1051243014e87fa06f89
attribute selector now updates attribute button bar when tool updates

Change-Id: Iba8a413ea14db9d48a933bdfabfc0784a9547bf2
added missing call to lang()