You Could Be Mine - Sprint 3 Completed

For detailed changes, see Sprint 3 milestone.
QA Performed by @antonmolodykh.

New features

• Adds streaming support for YouTube (#586)
• Adds versioning of API (#587)

Bugfixes / improvements

• Improves NOOBS image (#578)
• Improves network status detection (#579)
• Adds result of display status to system page (#585)
• Removes unused assets (#581)
• Disabled for duration field of videos (#590)