Remove persona plugin (patch is attached)

[jgart]

Hi!

Mozilla persona is RIP since 2016. See here:

https://github.com/mozilla/persona
https://en.wikipedia.org/wiki/Mozilla_Persona

I think I got it all. I haven't tested this patch yet.

What is your setup/workflow for testing mediagoblin?

all the best,

jgart

ps

Also, what do you think of enabling the gitignore for python bytecode files 
since we don't need those in the directory and they will probably slow down the 
speed of cloning the repo?

0001-Remove-persona-plugin.patch
Description: Binary data