ES5: Added KQ 4.13, plus minor changes

In addition to adding KQ:
* Removed the "For example" footnotes (on the basis that the example
test code contained the example, too).
* Removed the define-property-webkit note from WebKit (but not from
Safari 5).
* Renamed the Opera and Chrome rows to reflect the fact of Opera 15+
being Chromium-based rather than Opera 12-based.
* Added ES7 hyperlink to the ES5 and ES6 pages.
* Set "Show obsolete browsers" off by default. The obsolete browsers are
all multiple years old now - their relevance has diminished. Open your
weary eyes and behold verdant, verdant green.
Decided not to mark Safari 5.1 as obsolete

Also, removed the Safari 5.1.4 bind footnote, which is now over 2 years
old.
Merge pull request #195 from webbedspace/kq

Add Konqueror 4.13 to ES5, plus minor changes