Fix #152. Move menu creation to Menu_Registry.

- Move registration of resource menue from controllers to menu-registry
- Introduce context param for getMenu and setMenu to allow the same menu in different context, e.g. resource-menu for different resources
- If resource entry has class Model send a model parameter
- If the css class of the dom node ist Model send model-paramter instead of resource-parameter to the service/menu action
- Change order of insertion to append