Issue #1070120: Do not allow disabled displays to show up in views_get_applicable_views preventing them from showing up in hook_menu and hook_block.

#881468 by longwave: Improve performance by static caching results of argument validation because menu likes to double validate things.

#670308 by Mike Wacker: Make views_get_view() properly set disabled flag when retrieving default views.

#570558 by yhahn: Segment default views caching to conserve memory used by Views during normal operation.

#642328 by dboulet: Always include views.css since a site using Views probably uses it in blocks anyway.

#495606 by Roi Danton and dereine: Introduce views_get_view_result() as a fast way to get just the results of a view.

#535868 by dagmar: Exposed forms as plugins, helping to isolate exposed form code and increase the ability for modules to change the behavior of exposed forms.