Docs: Update section about the X-UA-Compatible meta option

Chrome Frame is not supported anymore and we removed the option in
8fc2650.
This commit removes the documentation about Chrome Frame in the
X-UA-Compatible meta tag docs.

Related to #1396.
Further optimize the apple touch icons

Reduce the total size of the icons by 172 bytes using zopfli.

Close #1415.
Docs: Update the `Track JS errors in GA` section

Add column number parameter to the example to reflect the recent changes
in the specification and in the Chrome and IE 10 implementations.

http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#errorevent
https://code.google.com/p/chromium/issues/detail?id=264197

Close #1417.