Formatting
Merge branch 'master' of github.com:UniversalMediaServer/UniversalMediaServer
MEncoder: Only do the mod4 and aspect ratio corrections when they are needed
FFmpeg: Only pad the video to 16/9 if it isn't already 16/9
MEncoder: If the renderer hasn't specified its maximum width and height, assume its preferred aspect ratio is 16/9
Renamed isVideoRescale() to isMaximumResolutionSpecified()
Files with resolutions that are too high for the renderer will not be streamed if they are otherwise supported
Formatting and description update
Formatting
Require MaxVideoWidth and MaxVideoHeight to either both be 0 or both be higher than 0

If the renderer config sets only one to 0, UMS will act like they are both 0
Removed obsolete comment
Sync Samsung SMT G7400 conf with PS3.conf

We should probably strip the settings descriptions from all renderer confs except PS3.conf anyway but this will do for now
Enabled support for 4k videos by specifying a maximum resolution of 1920x1080 for all renderers that previously had unlimited

If any renderer does support 4k then we can just change it but I think 1920x1080 is a good idea for now, and having it in the configs instead of hardcoded will be better for futureproofing