Toggle: optimized aria attribute setting
Merge pull request #4072 from patheard/optimize-toggle

Toggle: optimized aria attribute setting
Toggle: changed aria init to function call

Optimized for speed now that the plugin is being used by
tabbed interface and the mobile menu.
Overlay + WET theme: Changed overlay header background colour to #2E5274 so stands out more against background
Merge pull request #4073 from pjackson28/changeoverlayheadercolour

Overlay + WET theme: Changed overlay header background colour to #2E5274 so stands out more against background
Updated build version to v4.0.0-b1-development
Merge pull request #4074 from patheard/optimize-toggle

Toggle: changed aria init to function call