Fixed column_width setting from showing when switching field types

https://github.com/AdvancedCustomFields/acf5-beta/issues?direction=desc&sort=updated&state=open
Signed-off-by: Elliot Condon <e@elliotcondon.com>
Fixed message and tab fields settings bug

https://github.com/AdvancedCustomFields/acf5-beta/issues/282
Signed-off-by: Elliot Condon <e@elliotcondon.com>