Bug 30406: Add column filters before hiding columns
The code that adds column filters works only on visible columns, so we
should hide columns after filters are created
Test plan:
1. Apply patch
2. Go to Tables settings. Hide city_state for the cities table.
3. Create some cities and go to the cities page
4. Verify that filtering works as expected.
5. Make the city_state column appear. Verify that filtering on this
column works too