Fix that allows the custom json_decode function to match the native PHP declaration
Added backwards compatible support to handle local metadata.json files in plugins and themes
Removed support for metadata.php files in favor of metadata.json files
Added remote metadata.json file support to plugins and themes
Removed Theme/Plugin type division for metadata handling
Themes are now sorted by theme name fetched from metadata rather than directory name
Added all metadata.json files for plugins and themes
Plugins are now sorted by plugin name rather than plugin directory name
Minor fixes and improvements to the new metadata system
More minor improvements to metadata system

Allowed glob() to sort results
Normalize directory paths for admin/plugins page
Coding style (app/admin.php)