RFE: (auto-) rejoin mucs after disconnect

With Spark 2.5.6 (probably earlier versions as well) if the user is participating in a MUC (or several) and gets disconnected for any reason (vpn drop, dsl disconnect, user error, you name it…) while the window to the MUC stays open there is no way of easily rejoining that conference.

Since spark knows it got disconnected in the first place and prints (you got disconnected…) it would be kind of nifty and useful if there was a place the user could just click on and get rejoined.

I agree, auto-rejoining MUC rooms is critical for people with constant link outages. The lack of the auto rejoin feature may prevent many, (i.e. the US Navy) from using Spark.