gateway account for bugreport, and put it into addressbook

[mailchuck]

• [ ] It could go to my help address or later, once there are reverse users on the gateway, to the ticketing system through this.
• [x] Can be triggered in a new menu item under help.
• [x] It should create a new identity if there are no identities
• [x] It should add the help addressbook entry if not present
• [x] Once both conditions are true (at least one identity and an addressbook entry for help exist):
• [x] It should prepopulate the "send message" tab with a meaningful subject
• [x] make sure that the "from" is not a chan/mailing list
• [x] and put some meaningful info into the message body (the user can delete to increase their anonymity anyway)