update selenium-java.version to 2.42.2
update user Root in Platform_Username_EmailAddress.java
create new users with username as Email Address for TC 4.0.7

	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/plf/sniff/PLF_HomePageGadget_GettingStartedGadget.java
	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/plf/sniff/PLF_HomePageGadget_InvitationGadget.java
	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/plf/sniff/PLF_HomepageGadget_WhoIsOnlineGadget.java
	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/user/Platform_Username_EmailAddress.java
	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/wiki/functional/information/Wiki_RelatedPage.java
	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/wiki/sniff/Wiki_Information.java
	ui-testsuite/src/main/java/org/exoplatform/selenium/platform/wiki/sniff/Wiki_WikiSetting_ManagePermission.java