Menu: First mobile panel menu with wb-navcurr class is opened by default.
Merge pull request #4096 from pjackson28/mobilepanelnavcurrentfix

Menu: First mobile panel menu with wb-navcurr class is opened by default
Fixed duplicate charset declarations and comment blocks in IE8 CSS file
Merge pull request #4097 from pjackson28/fixie8cssterms

Fixed duplicate charset declarations and comment blocks in IE8 CSS file
Details/summary polyfill: Switched text-align: right in demo CSS to text-right class in demo markup.
Merge pull request #4098 from pjackson28/changedetailstobootstraptextright

Details/summary polyfill: Switched text-align: right in demo CSS to text-right class in demo markup.
Updated files for the v4.0.0 Beta 1 release
Merge pull request #4099 from pjackson28/newrelease

Updated files for the v4.0.0 Beta 1 release
Updated build version to v4.0.0-b2-development