fixes "DTS method failed to re-order timestamps"
FLVOutput module

I know flv...
But works and keeps a/v in sync.
(re) serve stream with cvlc so it can be played over standard http
inputs: factor out common code
fix typo, adds size only caps
adds a basic test input source
fixes negotiation errors when using TestInput

Putting a queue before input selector like this:

    videotestsrc ! queue ! input-selector

fails on some versions of Gstreamer.
config: save local changes upon exiting.
adds monitor for sound cards
adds generic Alsa input
use the same audio format across all the system.