Summary:
Implement audio player using web ui.
Add new blob aspect for audio files.
Test Plan:
1. Upload browser compatible audio to perkeep
2. Navigate to web UI
3. Open the audio blob's detail page
4. Play audio
Before:
Audio cannot be played using web ui
After:
Compatible audio can be played and paused from the detail page
Audio title and artist are shown if available
Issue: #202
Change-Id: Icd450aaa16e9e622a677c23f4f1f699784453dbc
Omar Chehab