started navigation bar implementation

pass/public/fonts/liberation-sans/LiberationSans-Bold.ttf

...ublic/fonts/liberation-sans/LiberationSans-BoldItalic.ttf

pass/public/fonts/liberation-sans/LiberationSans-Italic.ttf

pass/public/fonts/liberation-sans/LiberationSans-Regular.ttf

pass/public/fonts/liberation-sans/SIL Open Font License.txt

pass/public/images/metager-schloss-orange.svg

pass/public/styles/base.css

pass/public/styles/base.less

pass/public/styles/misc/vars.less

pass/routes/checkout/checkout.js

pass/views/index.ejs

pass/views/templates/page_header.ejs