major Full Grid updates: AutoEpisodeAdvance, getCurIndexFromFullGrid
 * AutoEpisodeAdvance re-coding - more efficient and works with full grid
 * current index from fullgrid was wrong due to header row/row items
 * new logic to reload full grid when items are "not supported" and watched(remove)
   I.E. watch the last episode in a season from the "unwatched" full grid
        item was removed, but other rows were not reloaded, which is needed
        to shift items in each row due to removal (or possible addition)
createPlexContainerForUrlSizeOnly() regression (starting in v3.1.36) -- was requesting context with all items
extra logging on screensaver saving images