Rule for .collapse.in conflicts with <tr> elements

Created by: chtheis

Since 3.1, I guess, bootstrap has a rule .collapse.in { display: block; }

This rule conflicts with <tr> elements which require "display: table-row". And maybe others as well.

I haven't searched the sources where this rule is defined. Just using the download bootstrap-3.1.0-dist.zip and there it is defined in bootstrap.css line 2357.