[cosmetic] drop unused include
[fonts] drop reading of unicode='true' attribute as we assumed it was true anyway
[stringutils] adds version of Tokenize() that returns tokens
[fonts] re-write the fontmanager loading from XML to cleanup a bunch of silly old code
[fonts] cleanup the skin font setting filler in the same way
Merge pull request #4740 from jmarshallnz/font_manager_cleanup

Font manager cleanup