btngroups
Remove type attribute of tag "script".
In HTML5 in tag script, the type attribute is no longer required. The default value is "text/javascript".
http://www.w3.org/TR/html5/scripting-1.html#attr-script-type
Merge pull request #9079 from liuyl/buttongroups

Fix #7108: btn group styling
Merge pull request #9081 from vsn4ik/rem_type_attr

Remove type attribute of tag "script".
Merge pull request #9087 from eratzlaff/3.0.0-wip

Update documentation on offset for small medium and large devices.