Assure NLS support is activated for all translations

Modifying the build system left NLS support not working in several
modules.  Reworked the local headers to remove any cascading header
includes and explicitely include config.h and libintl.h in those
modules.  Thanks to David, CT1DRB for bringing this to my attention.

Reorder the header files in each .c file in alphabetical order and
grouped by standard headers, third party headers, and local headers.

Strip trailing white space from source files.
Add rigctl and Firefox command options in preferences

Add the command option for rig device (-r) to default rigctl command
line.

Add the command option to open a link in a new tab (-new-tab) for
Firefox otherwise it will no longer open the URL.
Correct file name for Polish FAQ translation.