The select_widget allways used the cats of the current application. That's still the default, but it can be overwritten now via an option. The nextmatch_widget has now and optional parameter 'cat_app', which defaults to the app of the get_rows method.
- improved printing:
+ disabled unnecessary UI-elements in nextmatch
+ nextmatch has now selection for the number of rows to display
+ nextmatch-filters (selectboxes) are now printed as text
