* Orange75: cleanup and Configurator support update
`orange75.h`:
Moved `K014` to the second (number row) as the left half of a split Backspace (guessing at its true location; will need to be checked/tested after merge).
`info.json`:
Updated to match new `LAYOUT` macro.
`keymaps/default/keymap.c`:
- Updated to match new `LAYOUT` macro.
- Added layer mock-ups as block comments.
- Formatted to be a bit more readable.
* Orange75: deleted an extra comma from keymap.c
