add context menu

Signed-off-by: Lehner Florian <dev@der-flo.net>
add DELETE COLLECTIONS request

Signed-off-by: Lehner Florian <dev@der-flo.net>
more checks on user input

Signed-off-by: Lehner Florian <dev@der-flo.net>
0.09

Signed-off-by: Lehner Florian <dev@der-flo.net>