[ENH] Change col-lg-* to col-md-* classes for better middle-size display behavior.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@49586 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] Change col-lg-* to col-md-* classes for better middle-size display behavior.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@49587 b456876b-0849-0410-b77d-98878d47e9d5