Adblocker conflict with social-login class in login button

[hoxia]

Description:

When using an element-hiding adblocker configured with Fanboy's Annoyances or Anti-Social lists, the Rocketchat login button is hidden. This is due to use of the class "social-login", even if the login authentication does not use or offer a "Social Media login".

I would file a bug on that list, but since this is software used on a multitude of domains, and as changing that class when the login is not "social" could be trivial (hopefully), filing it here seems more appropriate.