* Addressed issue #7 (https://github.com/thenadz/document-gallery/issues/7) -- thumbnail generation timeoue is now configurable
* Added some additional groundwork to support a "Logging" tab on the settings page

git-svn-id: https://plugins.svn.wordpress.org/document-gallery/trunk@971573 b8457f37-d9ea-0310-8a92-e5e31aec5664