getStreamingData SWIG wrapper: return Py_None instead of empty dict

57d350d4d650160e3ab96a6c740f0c52fee29da5 fixed handling
of an empty streaming data dict, but external plugins
which call getStreamingData suffer from the same issue.
So work around it in the wrapper.
added repeating current item in movielist

Signed-off-by: Littlesat <littlesat99@yahoo.com>
less code for repeat current item in movielist

Signed-off-by: Littlesat <littlesat99@yahoo.com>
MovieSelection: Allow suspend (to standby) from dialog

When going to standby, stop any preview or running service. Otherwise
the picture-in-graphic gets messed up, apparently this information is
not being restored.

When resuming from standby, re-read the list because it may have been
a while and a lot may have happened.
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2