FIXED: db issues and correct links to cs-pages

Statistics page was still using the wrong db connection. Also, a link to the reset password as well as corrected the link to the registration page to the cs-club's registration page.
FIXED: url error and parsing error

The url was not working because of a duplication of arguments. Also, the parsing was not working because there is a new class type that our regex is not capturing. A quick fix was done to it which is to set every unknown class type to class type 1. This is sufficent for now since the class type is not used extensively to find free rooms.