Add token browser

I setup an action to send me an email when a new comment is posted, but I had to go searching to find what tokens I could use in the subject, etc.

Recommend adding a token browser to make this easier.

[Graham-72]

Thanks for this good suggestion.

[laryn]

I'll add: the example in the help text includes a token that doesn't work. It lists [user:name] but I had to change it to [node:author] to get it to work.