pvr: fix deadlock caused by pollling channel group name
Added SFTP to the check for internet streams as a "special case" (similar to ftp/ftps)
Merge pull request #5278 from arucard21/SFTP_as_internetstream
Merge pull request #5269 from FernetMenta/pvr

pvr: fix deadlock caused by pollling channel group name
[input] use GetActiveWindowId() for resolving window actions for keyboard input instead of duplicating it's logic
[input] use same keymap fallback logic for touch inputs than for keyboard and joystick
[PVR][input] add special case handling and default keymaps for PVR radio in visualisation/fullscreen mode