Finished up joint parameter UI

git-svn-id: http://beast-mcmc.googlecode.com/svn@6518 ca793f91-a31e-0410-b540-2769d408b6a1
Minor tweaks to linked parameteres.

git-svn-id: http://beast-mcmc.googlecode.com/svn@6519 ca793f91-a31e-0410-b540-2769d408b6a1
Messed up the create partition button.

git-svn-id: http://beast-mcmc.googlecode.com/svn@6520 ca793f91-a31e-0410-b540-2769d408b6a1
Fixed bug with generating robust counting.

git-svn-id: http://beast-mcmc.googlecode.com/svn@6521 ca793f91-a31e-0410-b540-2769d408b6a1