Issue with shareable links due to HTTP and HTTPS having separate localstorage

[Asmor]

In troubleshooting #150, I discovered that HTTP and HTTPS have separate localStorage. Thus if someone distributes an HTTP shareable link, it won't work for someone who uses KFC via HTTPS, and vice versa.

Need to find a way to either detect that someone uses the other protocol, or perhaps even find a way to sync everything to HTTPS and then force everyone to that.

[Asmor]

Might make sense to roll this and #149 together into a single big "migration" that would handle porting everything over to HTTPS and splitting up the sheets.