Fixed Trident 7 class inheritance function stub.
Trident 7 inherits previous Trident's 'keyup' and wrapWithcontainer'.
Seemingly obvious changes to tests upon introduction of IE11 support.
Add comment to existing erroneous code in copy-paste tests.
Don't skip table-insert_in_sublist tests in IE7 and IE8. They pass.

They were failing on me before. I guess IEs are strange...
Update the 'Image insertion outside of a container' test about IE11.