DimensionGrid:Selecting Multiple Values in Multiple Columns

Build 826 on feature/2193-dimensionGrid-multiSelect
1200px
Reviewing disabled
Baseline History
Build 826bcba375
Current build. There are unaccepted changes, so build 820 is still the baseline.
Build 7472dce4e6
Accepted by Adam.
Commenting is disabled because there's a newer build on this branch