Resized filter widgets, such that all combo content can be displayed
completely.

Issue-Ref: 4014
Issue-Url: https://af3-developer.fortiss.org/issues/4014


Signed-off-by: Andreas Bayha <bayha@fortiss.org>

- The filter is now better integrated with the content provider.
- Javadoc comments.

Issue-Ref: 4014
Issue-Url: https://af3-developer.fortiss.org/issues/4014


Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Added filters for model element and column name.
Also the filter for selected element type is implemented.

Hierarchy and annotation type are still pending.

Issue-Ref: 4014
Issue-Url: https://af3-developer.fortiss.org/issues/4014


Signed-off-by: Andreas Bayha <bayha@fortiss.org>

Added filter section.

Issue-Ref: 4014
Issue-Url: https://af3-developer.fortiss.org/issues/4014


Signed-off-by: Andreas Bayha <bayha@fortiss.org>

First Durchstich to display annotations according to the current
selection.

Issue-Ref: 4014
Issue-Url: https://af3-developer.fortiss.org/issues/4014


Signed-off-by: Andreas Bayha <bayha@fortiss.org>