Upgrade to TinyMCE 2.1.0

[Nazgul]

TinyMCE 2.1.0 Released:

​http://tinymce.moxiecode.com/punbb/viewtopic.php?id=6015

Thanks for doing that patch! Some issues in the diff that should be fixed before commit:

Changing wp-includes/js/tinymce/plugins/directionality/langs/en.js may break translations.

inlinepopups/editor_plugin.js -287,+392 undoes a WP-specific feature: "close" buttons on the left for macs.

inlinepopups/editor_plugin.js -561,+684 removes a WP focus fix. See comment in source and test.

tiny_mce.js -5186,+5223 might suck.

themes/advanced/jscripts/link.js -25,+25 should not be changed. -58,+57 looks like it'll break anchor-only links people sometimes try to add. I think these are both WP changes.

themes/advanced/link.htm should not be changed. This is WP stuff that sets focus and reverses the button order and kills enter-key submits.

themes/advanced/css/editor_popup.css removes stuff marked as WordPress customizations.

themes/advanced/image.htm changes are all WP custom, shouldn't be changed.

themes/advanced/source_editor.htm same deal.

Updating TinyMCE is probably easier if you patch from a diff between TinyMCE releases. Diffing against WP's implementation requires this kind of attention.

Andy's changes

My latest patch

My turn.

This one actually looks good.

mce.diff applies the upgrade and fixes all of the interaction issues I could find. Ready for commit and broader testing.

(In [5256]) Upgrade TinyMCE to 2.1.0. Props andy. fixes #3788