add Wi-Fi agreement at VSB

[benabraham]

By accessing and using WiFi network tuonet-guest, you confirm, that you are familiar and agree with the "University computer network use policy" described in document named "Pravidla užívání počítačové sítě VŠB-TU Ostrava (TUO_SME_99_002)" (czech language only) and with all related documents. The University may monitor and report all incidents caused by using this network and forward them to appropriate subjects (university CSIRT team, police etc.).

[benabraham]

added