added forIn, getBytes for supporting ie8

added 2 util functions (forIn, getBytes).
- forIn : ie8 ignores constructor property in "for .. in" loop. this function would be used also in Spine.
- getBytes : it would be used in Match Breakdown for calculating the correct offset of pie chart title (such as 'Champion Kills', 'Gold Earned') not only 1byte character but also 2bytes character.


I just tested with that code, and ie8 doesn't show `constructor` in console.

Did you test with ie8 emulator in ie11 ?
i also tested in that way and it showed, but the native ie8 (it's on my windows7 virtual machine) doesn't show the `constructor`.
it think that's the point.