Revert "Removed header and sidenav includes"

This reverts commit b7872df22fc461e403f44f8c1333664e1f1faeeb.
Revert "Migrated to Express 4.1.0"

This reverts commit aab10fed6afd127a31b4740662b482ae17db5b6e.
Revert "Fixed typo"

This reverts commit 9e112622779c72e6a5e6ad64b9a66d61f4f91873.