Catched some errors
Added error message sent to players
closed #78
Added new helpers
Using new Helpers for cleaner code
Cleaned up Widget configuration
MetaData will also keep compatibility information
Fixed mistakes with current system. Modified Dedimania for new system
Added support for the new system to all plugins
Fixes to make it work. Adapted Autoloader not to even load the plugins in
the first place
Merge branch 'dev-metaCompatibility' of https://github.com/eXpansionPluginPack/eXpansion into dev-metaCompatibility