PPG: UB version 26 available for playtesting

[Kulyok]

Thanks to Angel, we now have a brand-new version 26, available for playing(but cautiously marked with a BETA tag on our website).

No new components and quests here, but there're numerous BWP fixes and many coding changes:
- Replaced all instances of DECOMPILE_BCS_TO_BAF and DECOMPILE_DLG_TO_D with DECOMPILE_AND_PATCH.
- Used build-in WeiDU functions like ADD_SPELL_EFFECT and ALTER_EFFECT where possible.
- Replaced old style loops with GET_OFFSET_ARRAY and PHP_EACH where possible.
- Phased out the included HANDLE_CHARSETS in favor of the one shipped with WeiDU.
- No longer using ALLOW_MISSING, proper conditions and prerequisites are in place everywhere.

Get it at http://www.pocketplane.net/ub