Changed default authentication method to Database; this is the only option guaranteed to work in all contexts, so it is a safer default.

Moved themes from /themes/vufind/ to just /themes/ -- this simplifies file paths and fixes a bug in install.php that generated an invalid Apache configuration.  This increases the risk of conflict with themes from a different module, but using VuFind in combination with other theme-using modules is going to require extra customization anyway; not worth complicating the common use case.

When a variable is injected by the VuFind\Bootstrap process, it is only available to the layout; this revision modifies templates to access variables through the layout() helper so the correct values are accessible everywhere.

Made APPLICATION_ENV control detail level of error output; added detailed error message to 404 page.

Implemented SearchOptions view helper; added lots of ZF1-style search code that still needs to be ported over to ZF2.

Progress on jQueryMobile theme's MobileMenu helper and its dependencies (but not fully tested/functional yet).

Finished IndexController -- it now forwards correctly.  Note that this required loading the latest master copy of the ZF2 Forward plug-in; the official version distributed with beta4 was broken.

Moved theme-specific view helpers inside VuFind namespace to avoid namespace profusion and to eliminate overcomplicated autoloader registration.