Firefox testing

[eranshmil]

Should be checked for both Twitter and Facebook.

• Make sure that bots are detected.
• The report button is available.
• The report button is disabled for reported users.

[eranshmil]

Currently not working at all.
We need to do some tweaks for the manifest.json and change the Facebook regex, because Firefox doesn't support negative lookahead and grouping.
My guess is that more changes are needed in order to make it work.