- Made all Change classes save to and load from .zip files.
- Changed Column.headerLabel to Column.name.
- Save project's raw data to "raw-data" file for now. We'll make it save to a zip file next.
git-svn-id: http://google-refine.googlecode.com/svn/trunk@217 7d457c2a-affb-35e4-300a-418c747d4874
Turned is* functions into controls, since they have to be able to test errors, and only controls can do that, not functions.
Polished display of errors in cells and in expression preview dialog.
git-svn-id: http://google-refine.googlecode.com/svn/trunk@155 7d457c2a-affb-35e4-300a-418c747d4874