introduced global(screen) context-menu support, context-menu
handling moved to content class, respect info handler's settings
added support for screen context-menu in BaseContentScreen,
added "Recent Downloads" to screen context-menu
folder handler will show csfd/item info, cosmetics
introduced dynamic video resolving support
added SelectSource screen
fixed pause/resume in rtmp streams when RtmpController
is in use
always reset subtitles engine after video change in playlist
context menu: fixed possible encoding issue
ContextmenuItem handler to AddonContentHandler