remove empty textbuffer and set an icon, if no card is selected

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

Signed-off-by: Lehner Florian <dev@der-flo.net>
make Textbuffer obsolete for vCards

Signed-off-by: Lehner Florian <dev@der-flo.net>
there is stuff you can have multiple times

Signed-off-by: Lehner Florian <dev@der-flo.net>
Layout needed to be changed before release

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

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

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