Filter Annotations based on type/subtype configuration.

[JKatzwinkel]

Please have a look at the changes in revision range ada7897...494768a. These modifications add a submenu to the Annotation Part's View Menu, which then gets entries attached that represent annotation type and subtype definitions found in BTS Configurations.

This enables users to not only choose what classes of related objects should be displayed in the Annotation Part, but also what types/subtypes of annotation objects.

Problem is, that when annotation type and subtype configuration changes, the Annotation Part should reflect the changes made in the configuration. How can re-construction of the Annotation Part be enforced whenever changes have been made to BTS configuration elements that affect annotation type/subtype definitions?