Added control containers first draft
Added DateColumnSetContainer control
fixed foreach mistype in datacolumnsetcontainer.vtl
moved getIds in the util package
Merge branch 'danih_ui_redesign' of git@github.com:xwic/appkit.git into appkit_5.0
Merge branch 'bogdan_#1246_layout_containers' of git@github.com:xwic/appkit.git into appkit_5.0
added javadoc comments, throw out todos
Centred Window
Merge branch 'bogdan_ui_fixing' into danih_ui_redesign