A few fixes in SpecialUserFuncs: made avatars have a +30-day expiry date and made full login form show encryption blurb even when user_level > USER_LEVEL_MEMBER. Added expanding user-info blocks in memberlist (experimental).

# Used for testing mod_rewrite.
<IfModule mod_rewrite.c>
RewriteEngine on

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) install.php?do=modrewrite_test&str=$1
</IfModule>