Created by: arechsteiner
As discussed here:
https://github.com/twbs/bootstrap/issues/13120 and https://github.com/twbs/bootstrap/issues/18510
The two options that make sense are either 948px or 936px. Bootstrap 3 uses 940px. I think it's better to err on the side of having a few pixels more instead of less.
Then all containers will be divisible by 12 by default, which does away with uneven column widths.