#299042: Clear the entire theme registry cache, not just the current one, when hitting the rescan button.

#306177: Fix wording on overriding text to remove implication that filters, argumets, et al must be overridden together.

Reworked access control to be a plugin. This will have the beneficial effect of drastically reducing Views load during menu access checks.

Major re-organization of handlers. PLEASE NOTE: This drastically affected the Views module API and until modules are updated to match, they will stop working. Efforts have been made to ensure that this won't cause your site to crash, but that's partly up to the individual module as well.

#300192: Nicer arguments on exposed numeric filters and dates when the between operators are not allowed/in-use

#289477: Node "has new content" still tried to render a link for anonymous users even though there is nothing to render.

#296765: user autocomplete incorrectly required administer views access. Also incorrectly required Views UI module.