Revert "LPS-36368 isDomain already checks for null"

This reverts commit 8c9c3c5ec49a56bb0557afa245aada06390b35f2.
LPS-39230 Forces html5 shiv for IE < 9 on startup
LPS-39230 - Removing implicit globals
LPS-39230 - Only adding the module to the core if we're in IE
LPS-39391 Fine tuning error message for staging setup screen
LPS-39391 Fine tuning by re-arranging error message screen for failed jobs
LPS-39391 Apply the same to the portlet staging background task executor along with additional refactoring
LPS-39391 Lang keys
LPS-38302 We should use the passive past
LPS-38302 Add a new method to get the control panel link of a file entry
LPS-38302 Add a new method in the trash Handlers to get the restore link of an entity
LPS-38302 Modify the restore message that appears in recycle bin to "The [Item Type] [Item Name] was restore to [restore path]"
LPS-38302 Rename the method following the pattern of contained and container
LPS-38302 Reuse logic
LPS-38302 SF
LPS-38302 Lang keys
LPS-39178 move logic to another method (no changes)
LPS-39178 Asset Link Behaviour is not working for portlets on pages in User Groups' Site Template
LPS-39178 Source format
LPS-39178 SF (see VirtualLayout.java)