finish landing pages
polish on learning paths
owasp page polish
learning paths
remove linebreaks in forms
Merge commit '72c78ca5a726512137affaf9ed02f2c841580f57' into Issue_55_Node_Poc

Conflicts:
	source/html/_layouts/head.jade
	source/html/user/returning-user-login.jade
	source/html/user/returning-user-validation.jade