---wip - make processes return results, pluing progressbar to executor
added HttpProcess re-organized pacakges
added Vetoer and added Ping action to serviio tab
finished adding the Vetoers and ActionModel
refactored abstract model, introduced Value and ModelValue and a few implementations.
big refactor, made all model value listenable. Added UIComponent builders.
added support for macosx quit
ensured that Apple specific code is run using reflection