fyi: few security things

[LBmtb]

To prevent bots from searching through this site and grabbing email addresses for spam, I took a few preventave measures.

On the rides/riders page, I replace "@" with "AT".

Also, nobody can view a person's email from the profile (in the forums) without being logged in. They can still see the logo but it'll be a plain image with no link to email.

Another small change is that "Log me on automatically each visit" where you login is automatically checked by default. That one isn't really a security change though.

Just a quick FYI.