VUMeter: Clean up backport
TODO: Update
Refactor method of recording - remove offline encoding

Reuse the pipelines setup by the NewRecording preview and pass them to
Record to be changed into a pipe which encodes and sinks to a file.
main: Make datestamp more readable
newRecording: Add opacity setting for secondary video
project: Correct the fields for the project config file

Also fix config file being always appended even if recordings are
removed due to global parser object not being refreshed.
VUmeter: swap back to alasrc from autoaudio as pulse audio was blocking

I get random blocks with autoaudiosrc when it's interacting with PA. :/
build: Version bump 0.8