added bootstrap-css for footer
first approach, not working on Android 2.3
adding png files and a fallback-library for svgs
changed structure of script-tags
Merge branch 'master' into svg_logo_fallback_

Conflicts:
	css/daliaresearch.webflow.css
Merge pull request #8 from DaliaResearch/svg_logo_fallback_

Svg logo fallback