fix ie9 issues
make log compatible with ie9
use Array instead of Int8Array for ie9 in importer

(also linter fixes)
change requestAnimationFrame shim for proper fallback
fix rotate-to-path tween
fix calculation of relative event position
change implementation of controls rounded rect

(due to buggy IE implementation of arcTo)
request protocol-relative image when reporting stats
use https if necessary when loading fonts
use https if necessary when loading images
use https if necessary when loading audio
Merge pull request #248 from Animatron/play-576

PLAY-576 When the player is loaded over https all resources should be loaded over https as well
Merge pull request #247 from Animatron/ie9-support

add IE9 support
Merge branch 'develop' into docs

Conflicts:
	src/anm/graphics/sheet.js