playground is not allowing any HTML

[zbraniecki]

Moved from: projectfluent/fluent#53

Repro case:
http://projectfluent.io/play/?gist=400ca1160898d72f5935796a9982b22b

[stasm]

I'm not sure we should allow this. On the low level, Fluent doesn't care about any markup in the translations. It simply formats translations as strings.

fluent-dom currently supports some HTML in translations but that's specific to this particular implementation and bindings.