enable warning 4505 - unreferenced local function
store SettingInfo more compactly
use Vec for arrays in AppPrefs3.h for ease of use
rename SerializeTxt3.* to SerializeSqt.*
fix a few 4189 warnings (variable initialized but not used), but don't enable the warning due to too many false positives caused by CrashIf()
sync loading is not good enough because i/o is arbitrariliy slow and out of our control (network drives etc.)