Content width small on big screens

[ChristophNiehoff]

On the create page, the width of the form is rather small. It would be good to have it a little bit wider, such that the form's label word-wraped in a better way.
Also, for our prod env, the table with the player links is formatted strangely, such that the player names are cut off. This is because of the length of our production url and how it is wraped. This would also benefit from have more content width.

I already tried to quickly fix this, but it turns out the width is defined by bootstrap and it didn't work straightforwardly.