New HTML Pages and improved web pages

Update Includes:
Contact.html
About.html
Login.html
Register.html
BUT WAIT THERE'S MORE!
Updated files:
Artist.html
Calender.html
error.html
Favorieten.html
Festival.html
Upload.html

NEW IMAGES INCLUDED
* Profile pictures
* Favicon added
Merge branch 'master' of https://github.com/utwente-di/di17
About.html and Contact.html
Merge remote-tracking branch 'origin/KalenderSetup'
fixjes oeps
sprintpresentatie

4444444
HTML update

once again
foutje oeps :scream:
update presentatie
grote oeps
Merge remote-tracking branch 'origin/master'

Conflicts:
	meetings/Sprint review 4/sprint4presentatie.pptx
commit