messaging

In Settings : 'Add a new side account' button

Step #2 in Side account creation

(a very light & quick version of onboarding, with only nickname step)
![side account mode copy](https://user-images.githubusercontent.com/37345040/99953009-dd7db900-2d80-11eb-9f6f-e

For classes declared with struct, forward declarations should also use struct. Currently, only struct Message violates this in a few header files (2 or so?).

We need a page to display where users can find source and binaries that have been successfully passed a vote.

We aslo need a security page on our podling site for any security issues that may arise. See http://tomcat.apache.org/security.html for an example.

Environment

• VerneMQ Version: 1.11.0
• OS:
  Distributor ID: Ubuntu
  Description: Ubuntu 18.04.5 LTS
  Release: 18.04
  Codename: bionic
• Erlang/OTP version (if building from source): 19
• VerneMQ configuration (vernemq.conf) or the changes from the default
• Cluster size/standalone:

Expected behaviour

Connection to Redis server running on unixsocket, configured within Lua scr