Make POST function work with real button bounds.
Make POST function work with real button bounds.

This will allow buttons with 0 as lower bound to work
sending POST requests with no entity details.
Also added a button to mock data to test it.

MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging