added new box for contributors to about page, added some text highlights in the "behind" section.
Merge pull request #148 from nuest/dev

added new box for contributors to about page...
Update lang_de.php
Update lang_de.php
Added language detection to dashboard to get correct badge descriptions
Update lang_de.php
Update lang_de.php
Update lang_en.php
Update lang_de.php

filled new block with supporter content
Update lang_en.php

filled new block with supporter content
Update lang_en.php
Update lang_de.php
Removed thematic maps view and added those sensors to the map display in routes.php
Moved download button into map and included addtional graphs
Fixed statistics in route.php, fixed responsive page behaviour
changed headlines in terms.php to use <h> tags, added anchors
removed "under_construction" text snippet
edited dataccess page
Merge pull request #150 from nuest/dev

Update dataaccess page
Comeback of the sign-in formular icons