Language selector now is first argument in URL. Simplification and deduplicatoin of language determination.

Merge branch '37-processing-of-personal-data-of-subscribers-of-mailinglist-needs-to-be-added-to-privacy-policy' into develop

Text entered in address field of mailinglist subcription is now rendered black. Additional fix for #3.

Merge branch '3-allow-visitors-to-subscribe-to-the-campaign-mailinglist-with-minimal-interaction' into develop

Create a local copy of Material Icon Font

See merge request !8

Add type specification to inclusion of local CSS file. Make sure CSS file can be loaded by making reference absolute.

Fix white text on white background

Closes #25

See merge request !6

Add margin to card content text to prevent clipping

Closes #24

See merge request !5

Fixes #25