Make sure block.main is set to true when toggling the main menu on handheld.
Make sure block.main is set to true when toggling the main menu on handheld.

This prevents closing the menu in the blur event handler of the
menuButton directive.

iQuarK/client-web-app.js,blinkboxbooks/client-web-app.js,iQuarK/client-web-app.js,iQuarK/client-web-app.js,blinkboxbooks/client-web-app.js,iQuarK/client-web-app.js