Invalid characters "/"

[JITivT]

I'm helping amend some feeds on some existing emoncms.org hosted accounts and notice I can now not use the forward slash character but can see it has been historically used on some of the accounts (in feed and input names & tags etc).
I can see a the same issue was flagged on the non emoncms.org code and fixed (emoncms/emoncms#750) - could the fix also be pulled into this fork?

Thanks