* Update to jquery 3.3.1
* Removed test json file
New template variable bodyClass. Better block structure to be able to
better differentiate content in screens.
gulpjs
* new spritesmith plugin
* reworked exports
* new nunjucks-render version fixing dependency issues!
File structure
New naming scheme for nunjucks files. Underscore used for files which
are imported and not directly displayed.
Nunjucks blocks where renamed and are placed differently.
New macro for navigational elements.
