pncconf -GTK BUILDER refactor
pncconf -fix live test bugs - openloop and stepper tune test

tried on a real machine with the 5i25
pncconf -factor out mesa and parport loading wip

I want common code for load,reading and writing mesa and pport interfaces.
common between config HAL file and HAL tests.
Then if we fix one we fix both.
pncconf -add pport test panel button
pncconf -fix parport test for pport2

and change how pport gets it's data from the screen
pncconf -fix up tests to use common I/O loading code

common between config written HAL file and live test HAL
pncconf -live test WIP