Replace site-logo-en.png

Ghost User
2017-10-03T16:20:34+02:00

Do a comparison and you'll notice what was wrong.

![Old](https://gitlab.science.ru.nl/thalia/concrexit/raw/3818aa0cdd8187d098daafb4d00766603c98012a/website/thaliawebsite/static/images/site-logo-en.png)

![New](https://gitlab.science.ru.nl/thalia/concrexit/raw/3f1bec1b4f1b76afa764542baeb9ebe8a35b27ea/website/thaliawebsite/static/images/site-logo-en.png)