http://dev.piwik.org/trac/login is accessible in plain HTTP, passwords are sent without encryption
mod_rewrite or mod_alias will do the trick
HTTPS access needs to be fixed aswell, right now it returns:
Secure Connection Failed An error occurred during a connection to dev.piwik.org. SSL received a record that exceeded the maximum permissible length. (Error code: ssl_error_rx_record_too_long)
Thx for suggestion. now the login form will redirect to HTTPS if http. Same for trac/admin requests.