videodb: add seasonview and refactor GetSeasonsNav()and refactor GetSeasonsNav()
videodb: add DeleteSeason()
[omxplayer] Remove unused framerate functions

Purely cosmetic, should have no functional change
Merge pull request #4704 from popcornmix/unused_framerate

[omxplayer] Remove unused framerate functions
Merge pull request #4724 from Montellese/videodb_seasonview

videodb: add seasonview and refactor GetSeasonsNav()
upnp: fix mapping of Neptune log levels to our log levels
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: some rework and documentation
renderer: bump buffers to 5
videoplayer: update frametime, it might change due to fps detection
videoplayer: give streams with invalid fps a chance for fps detection
dvdplayer: allow rewinding at end of stream, do a seek after rewind
dvdplayer: observe pts counter overflow
dvdplayer: avoid short screen flicker caused by unnecessary reconfigure of renderer
vdpau: advanced settings for auto deinterlacing
player: fix rewind
OMXPlayer: some caching fixes for pvr
fix incorrect display of fps when dr kicks in
renderer: allow some lateness within vblank interval