Also start to factorize Players and Channels, in preparation for
the upcoming MPD support
This was used to work, but it doesn't anymore :(
box.children is always empty, probably E is deleting the contents
of the popup before calling us. Try out a new implementation.
This wasn't visible in the paste, something is changed in efl...
it also spotted 2 real bug, so good work pycharm
...still not working with recent e, that changed the way modules are loaded