[#52][#68]Try to integrate tiqr
Introduce node-uuid
Make session works
[#52][#68] Integrated with TiQR
Remove node-uuid
[#71] Tool to unlock room
[#72] Use url safe base64 and add log trace to event source
[#73] Refactor Tiqr related code
[#74] Hide Edit Room button when room  is locked
[#75] Redesign the UI for TiQr Auth
[#76] Resize QRCode widget according to its container
[#79] Change color to red when room is locked
[#80] Experimental feature warning for TIQR