Add column-* documentation to grids page
Added column-* documentation to grids
Merge pull request #1116 from cfarquharson/v3.0

Add column-* documentation to grids page
Fixes #879: tab panel links now change panels
original exent work was done using class name

Could bleed into other sheets in the same scope
Merge pull request #1138 from nschonni/fix-base-extends-v3.0

Use placeholders instead of classnames for extends
Merge pull request #1128 from patheard/tabbedinterface-panel-links

Fixes #879: tab panel links now change panels
Resolved merge conflict.
Merge branch 'master' of github.com:wet-boew/wet-boew