improvements needed for tv support the first
a lot of fixes improvements and a few features

- a queue system. only used for downloading images right now
- complete rewrite of the updater now supports additions
Merge branch 'develop' into feature/tv

Conflicts:
	xdm/classes.py
new logic for comparing old an new element
- only the default media type is painted on index page
- ajax loaded other media types
- ajax pained "completed" / "home" status page
search for elements that are set to wanted
some cleanup
fix issue with double wii u … would have been for every last default element
caching on element instance improves new structure updater speed
save last loaded status in js to correctly show selected status
turn progress bar resize event hook to be called as a function
iOS bookmark icon
add a clearfix after the new complete / wanted switch
simpler system sub menu names
Merge branch 'feature/tv' into develop