fix typos and some other stuff

Fixed some typos and logical mistakes.

Worth explaining:

- "because iPhone" - PPK constantly tells in his speach "because iPhone", so it fits perfectly,
- "retinish in the same way" sounds weird, changed to "same pixel density",
- "sticky" -> "snapped" - this is how this mode is called in win8,
- "They win: future proof!" doesn't sound well, changed to "Advantages"

Also, translation is missing this part completely (didn't fix this):

"Третье обновление вышло давно (осень 2013, вроде), все уже должны были давно обновиться (уже обновляются на WP 8.1, на самом деле), старье на WP 7 баг не затрагивает, поэтому сейчас на баг можно смело забить."