v3.4.1

Note: Contains Database Migrations

• Switch from npm to yarn
• Adds support for remote widget urls (for video and other remotely held media)
• Unit tests remove reliance on installing all core widgets
• Adds fix for failing unit tests on critical php errors
• Changes widget installs to use json instead of yaml for qset data
• Adds 2 barebone test widgets used for unit tests
• Finally clears out the ucfauth submodule
• Removes npm shrinkwrap