Resolve "Set Thalia's theme colour on the address bar"

Luko van der Maas
2018-03-28T20:19:07+02:00

/label ~feature

Closes #568

### Short description
When opening the website on mobile the menu bar will have a magenta color.

### Steps to use this feature

1. Open the website on mobile
2. Open any page
3. The menu bar is magenta