Remove note on msie9, and some refactors
Remove note on msie9, and some refactors

moebooru/moebooru,euank/moebooru-thin,moebooru/moebooru,euank/moebooru-thin,nanaya/moebooru,nanaya/moebooru,moebooru/moebooru,euank/moebooru-thin,euank/moebooru-thin,nanaya/moebooru,moebooru/moebooru,nanaya/moebooru,moebooru/moebooru,nanaya/moebooru,euank/moebooru-thin