Added mate-bluetooth for further testing

Signed-off-by: willysr <willysr@gmail.com>
Added extra/mate-file-manager-sendto
mate-file-manager-sendto is an extension to Caja (mate-file-manager)
which allows the user to send files on MATE File Manager using the context menu

Signed-off-by: Willy Sudiarto Raharjo <willysr@gmail.com>
fix typo in mate-build-extra.sh; thanks to stormtracknole on LQ.

Signed-off-by: Chess Griffin <chess.griffin@gmail.com>