Group bool args in synopsis section as well

The args now show up as:

  [--no-reboot | --reboot]
  [--foo <value>]
  [--bar <value>]
Don't check if type is boolean in synopsis

Handled differently now.
Merge branch 'group-bool-synopsis' into develop

* group-bool-synopsis:
  Don't check if type is boolean in synopsis
  Group bool args in synopsis section as well