HTML imports ready for Firefox 35

See https://bugzilla.mozilla.org/show_bug.cgi?id=877072#c83
Safari 7.1 and iOS 8 updates

support is behind crypto.webkitSubtle prefix
Update the state of Element.matches() for Safari and iOS Safari

OS X Safari 7.1 and above, and Safari 8 and above support Element.matches()
without prefix.

The table was still saying the function has partial support, which is incorrect.
update Firefox

WebCrypto will ship in Firefox 35 https://bugzilla.mozilla.org/show_bug.cgi?id=1074001
update CSS Filters implementation status

- [Support will be enabled by default in Firefox 35](https://hg.mozilla.org/mozilla-central/rev/697c4b245de0)
- add corresponding [Chromestatus.com entry](https://www.chromestatus.com/features/5822463824887808)
data update
Merge pull request #754 from hakanson/patch-1

Safari 7.1 and iOS 8 updates
Merge pull request #755 from BenjaminPoulain/update-matchesselector-safari

Update the state of Element.matches() for Safari and iOS Safari
Merge pull request #756 from myakura/update-cssfilters

update CSS Filters implementation status
Merge pull request #753 from waldyrious/patch-1

HTML imports ready for Firefox 35
data update
data update