Tokenized 'visit topic' link to auto log users into discourse

[Falco]

@JpMaxMan

Many app based email clients - like gmail - use web view to load the links you click on that don’t have cookies saved if you may have previously logged in. The result is users are blocked from responding if they don’t have their login handy and often abandon the impetus to respond.

This is very specific to iOS right? Android equivalent (Chrome Custom Tabs) shares cookies by default, so this isn’t a problem in Android.