Unify references to HTML string chunk as being accessed as wchar_t[]
strings rather than repeatedly calling std::wstring.c_str() on the
chunk, then using character positions obtained from those strings
to index directly into the std::wstring[] form from chunk->fText.
MarkD: We felt that the fan de-BINKing did not go far enough.
CW: I suspect (haven't tested yet) that it's the cause of the bug that we see on MOULa but did not on Minkata where the rotating wall behind the missing Yeesha intro video stays indefinitely, with no obvious way out for the player, until it occurs to them to use the ESC key
MarkD: Ah. I think you are right. An oversight that can be easily corrected - maybe in the python code so that Ian can see the rotating wall for a few seconds and then auto continue on.