WIP templates: new templates for Inspire

Work in Progress! Please do not merge! 

Introducing some header and footer templates according to the mockups of the redesigned version. (need a lot of changes!) Grunt and Less have been integrated. This is the initial commit as to get started working with Jinja templates. 

Will update the pull request periodically to view the changes and get instant feedback.

Coming up... cleaner templates, search box and many more.