- remove unused ringbuffer code again
driver/fontrenderer: adding an additional bool to RenderString() seems inappropriate.
driver/fontrenderer: let RenderString() and getRenderWidth() default to UTF8
- change getRenderWidth() default to UTF8
- change RenderString() default to UTF8
- eventlist: rework header

  show channellogo, prev channel, next channel if possible
Merge remote-tracking branch 'cool-next-cc/next-cc'

Conflicts:
	src/driver/fb_window.cpp
	src/driver/fb_window.h
	src/driver/radiotext.cpp
	src/gui/audioplayer.cpp
	src/gui/infoviewer.cpp
	src/gui/scan.cpp
	src/gui/streaminfo2.cpp
	src/gui/widget/progresswindow.cpp