Initial transform from F3-main to F3-PA.

Changed:
- Description.ext:
 - Change header;
 - Change default param settings;
 - Change Endings description line;
- Briefing.sqf:
 - Added BW case (will still use default NATO briefing);
 - Added unset CUSTOM case (will need its' own briefing file generated if used);
- f_setLocalGroupMarkers:
 - Added extra PA Groups;
 - Added BW platoon;
- fn_tfr-setRadioFrequencies;
 - Changed default LR freqs;
- fn_tfr_settings:
 - Changed default LR backpack assignment setting;
- init.sqf:
 - Change to variable concerning JIP menu;
- assignGear:
 - Added BW loadout;
- project.paa:
 - added PA logo;
- logo.paa
 - removed F3 logo.