Deletes index.html for savety etc.

Index.html will be delteted to ensure savety to the system and prevents
conflicts with the concrete 5 templates system
Favicons, quickcontact color and kvk fix

Favicons are added to the includes folder for ussage within the
concrete5 project. Some styling is added with javascript to enable
onhover actions on the .contact-button div and css font-size for the
quick contact form. The KvK- and taxnumbers are added to the footers of
both templates