Expand lint to catch css issues

[jacogr]

No description provided.

[coveralls]

Coverage increased (+0.006%) to 85.565% when pulling 88a26ec on js-css-lint into 03db4d0 on master.

[derhuerst]

It seems to be very permissive. This passes the check:

.noSpacing{
  margin-top: 0;
  margin-bottom: 0}.list li{
  padding: .1em 0;
}