profile page: icon and hover explanation for auths
Merge pull request #241 from joernhees/profile-auths

profile page: icon and hover explanation for auths
log emails which are sent on dev-server

better style to see what will happen in production and also nice for trying
sign up / pw reset / email change token emails.
Merge pull request #243 from joernhees/log-emails

log emails which are sent on dev-server