Added back the create new classroom button.
Added back the create new classroom button.

cganas/picoCTF-web,cganas/picoCTF-web,picoCTF/picoCTF-web,cganas/picoCTF-web,picoCTF/picoCTF-web,picoCTF/picoCTF-web,picoCTF/picoCTF-web,cganas/picoCTF-web