html: form: introducing a new generation of forms to my website

The old form which was looking ugly and was not able to send mails will be removed
The new form looks gorgeous and sends E-Mails to the Team :)

If sending the mail was sucessfull, the website redirects the user to erfolg.html (not here yet)

Signed-off-by: Alex Naidis <alexnai00@gmail.com>
html: add sucess and error file for the feedback form

This depends on the new feedback form!

Signed-off-by: Alex Naidis <alexnai00@gmail.com>
html: fix typo (case sensitive) Schule.html

Signed-off-by: Alex Naidis <alexnai00@gmail.com>