PLF-5225 No Left Navigation at pages of /platform/web-contributors group after upgrading from Platform 4.0.0

Fix description
* Declare portal layout for the default group template which is used to create group pages.
PLF-5239: [IE8] Cannot download document from REST service

Fix description
	- Use cache for application files
PLF-5213 : Remove IDE entry from ProductVersion node
PLF-4757 : [Welcome Screens][Account Setup]Allow to skip the account creation

Fix description:
* Add method to read accountsetup.skip from environment parameters and handle this action
* Add more conditions to skip Account Setup and Greetings screens.
PLF-5133 [Login Screen] Form submit when clicking at a certain place outside fields

Fix description:
* Only trigger the action when user clicks on the button.