Haketilo

When trying to get Haketilo signed by Mozilla I found out my old Firefox API keys no longer work (it seems Mozilla expires those keys whenever it wants add-on devs to accept its amended agreement). Generation of new keys without nonfree software relied on Jahoti's mozoid.py¹ which stopped working after Mozilla had changed how it passes its anti-CSRF token to the browser.

I looked at Jahoti's Python code and Mozilla server's responses. The csrf token/cookie used to be present in a <meta> tag of a page served by Mozilla but this is no longer the case. I don't want to make delays digging into this issue right now, I may focus on this after #107