Update database and demo data
Make character_ptr tolerate nullptr in constructor

character_ptr::character_ptr(Character *) produced a crash if being
passed a nullptr. This has been fixed. Also when the internal id is 0,
instead of searching a pointer, nullptr is now immediately returned
by character_ptr::getPointerFromId().
Merge branch 'master' into scriptbinding
fix character id for mock to make tests work again
make old and new script binding a configure switch