Started to implement recon dialog.
Added long-running recon process, which doesn't actually do reconciliation just yet.
git-svn-id: http://google-refine.googlecode.com/svn/trunk@17 7d457c2a-affb-35e4-300a-418c747d4874
More work on the menu system to support sub-menus.
Data table columns can now be collapsed/expanded.
git-svn-id: http://google-refine.googlecode.com/svn/trunk@6 7d457c2a-affb-35e4-300a-418c747d4874