Google Gears support

[azaozz]

First run. Support for Google Gears managed offline storage. The patch adds all static files used in the admin interface to a single offline storage. That speeds up page loading a lot, as it serves virtually all requests for static files from the computer's HD instead of the network. So instead of 50-60 requests to the server on some pages, there are only 2-3.

(In [7938]) Support for Google Gears managed offline storage. Props azaozz. see #6965

Speed-up gears-manifest.php, no need to load all of WordPress

(In [7943]) Streamline manifest includes. Props azaozz. see #6965

Removed the one-time popup, moved all status messages to an on-demand popup linked at top/right on the admin header, added images to the popup and the security dialog.

(In [7951]) Gears update from azaozz. see #6965

This puts the pop-up on every page load.

Small fix after adding better admin SSL support.

(In [8002]) Stub site_url() and admin_url() for manifest. Props azaozz. see #6965

Always hide the gears popup, even whit cached css.

(In [8003]) Always hide gears popup. Props azaozz. see #6965

6965-validation.diff

Validation tweaks.

(In [8014]) Gears validation fixes. Props mdawaffe. see #6965

This got mentioned on the Google blog: ​http://googleblog.blogspot.com/2008/05/happy-birthday-google-gears.html

On another note, it's been renamed from "Google Gears" to just "Gears", so we should probably update to reflect at some point.

Moving Google out of Gears...

(In [8036]) Gears instead of Google Gears. Props azaozz. fixes #6965

(In [8166]) Move separator inside conditional. see #6965