use prx version of mp3.js so we get more format (layer, flags) info.
fix bug where $id3 factory was still in the code
reverse load order for aurora and codec js libs
fix validation calls, remove call to get metadata, it is throwing errors
call validation service from upload
remove new lines
set format to mp2 based on mpeg layer
fix warning method, add actual validations
switch validation logic. oops.
Merge pull request #149 from PRX/feat/validate_audio

Integrate audio validation and upload