[Feature Request] Interrupt "Start Encryption"

[scento]

It is not possible to interrupt the connection process after choosing "Start Encryption" in the chat activity. This feature might be useful to force a fallback to plain chat if a "friend" has a too bad mobile connection to synchronize OTR.

To implement this little feature some code around line 223 in src/info/guardianproject/otr/app/im/app/ChatView.java should be changed to add an additional menu entry to stop the OTR initialization process.