upgrade: Don't fail patch upgrade attempt if we can't open target file to get current hash
osk: Replace ¤ with $

Fixes #1820
hls: Fix issues when seeking past end of track

In particular when doing continous play

Fixes #1818
rpi/CEC: Add a setting that allows STOP key to be used as a "prefix" key

Stop + Pause  -> Back
Stop + Play   -> Media info (when playing video)
Stop + <<     -> Item menu
Stop + >>     -> Page menu
Stop + Select -> System log
Stop + Stop   -> Stop

Fixes #1802
glw: Fix some nastyness related to how we resolve properties

This fixes a long standing issue with image view in the UI, causing
just the spinner to appear and no image to be shown

Fixes #1803