added header / footer snippet, script folder including diet content, first brick 'Footer_Section_Links', adjustments to layout file
added new areas and snippets

added
* 'header',
* 'footer',
* 'languages'
snippets,

added
* 'inline-modules-bs-all.js' to layout file,
added editmode.css

* 'Footer_Section_Social_Icons'
* 'Footer_Section_SEO'
* 'Footer_section_Links'