* ServerUIPropertiesMenu for Configurator to edit builtin UIProperties of MP
* fixed unregister-functions of CallbackManager
* Reducing menuItemHeight in Configurator to avoid overlapping of the menu items
* Fully rebuild the admins menu after a player rights changed
* Added function to FileUtil to improve realpath, so symbolic links can be resolved
* Fixed indentation
* Update FileUtil.php
Fixed error in case of an absolute path on Unix-like systems.
* ServerUIPropertiesMenu for Configurator to edit builtin UIProperties of MP
* fixed unregister-functions of CallbackManager
* Reducing menuItemHeight in Configurator to avoid overlapping of the menu items
* Fully rebuild the admins menu after a player rights changed
This update partly fixes the issue https://github.com/ManiaControl/ManiaControl/issues/177 in the plugin activation/deactivation/changing case. It's not the perfect code, because it should be fixed inside core/Plugins/PluginManager.php, but it fixes the issue for now.