Update of libraries to the newest versions
jQuery v1.11.1
boostrap v3.3
d3 v3.4.13
Removal of unnecessary libraries, one function and one css file for svg
elements for the html sites without visualization.
Update to the latest bootstrap css
Replacement of footer divs through one boostrap <footer> with a
container and a <hr> tag for the horicontal line instead of css
Removal of all unnecessary divs (content wrappers) in the basic layouts.
Navigation is now toggable as intended by bootstrap and within a header
element.

New stylesheet with SIGNIFICANTLY less css while containing the same
look (no letter spacing anmyore, less padding at the navbar).

About.html had wider rows to make more space for the content.
Removal of unnecessary divs, minor fixes for the header div for the clou
Deactivating of all unnecessary css statements
Minor changes and deletion of old background file