* adds unability to see screenshare button on mobile devices test specs

* simplify code in testMobileDevice()

* userlist and chat panels should not appear at page load in mobile devices

* lint

* updates outdated audio specs due to leaveAudio changes

* correct clicks on disconnectAudio elements

* whiteboard not visible on userlistPanel or on chatPanel

* reworks mobile devices/usersagents

* fixes screenshare mobile/tablet specs

* adds whiteboardNotAppearOnMobile spec

* adds Chat Panel specification to Mobile-Tablet specs

* simplify getArgs() functions for all devices