Critical security update for elFinder.
 * Jails users into the elFinder root.
 * Forces user to be logged in as admin to use elFinder.
Fixed the "no homepage set" exception.
Now you are redirected to the admin section, as originally intended.
Added a "set as homepage" checkbox to page settings.
Improved the previously implemented "set as homepage".
* The check-box now updates directly on save (no refresh needed).
* Once a page is considered to be a home page, the configuration table will no longer get updated every time that page is saved. Not only does this improve performance, but it also prevents a potential bug where a custom set homepage would get overwritten.
* The label now belongs to the check-box.
Fixed several bugs in the install script.
* language_title Is no longer removed from input data.
* A database connection is now established before validating input, allowing validators to do queries.

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One bug still remains. See issue #46.
Fixed bug with PHP failing to interpret multiple shorthand if-else structures.
Updated to Version 1.1.0 Beta 2!