Revert "Web UI: Remove offline version of Web UI"

This reverts commit 24525fd086.
The reverted commit removed symlinks which allowed unit tests to
access FreeIPA code.

https://pagure.io/freeipa/issues/6447

Reviewed-By: Petr Vobornik <pvoborni@redhat.com>

install/ui/js/dojo

@@ -0,0 +1 @@
+../build/dojo

install/ui/js/freeipa

@@ -0,0 +1 @@
+../src/freeipa

install/ui/js/libs

@@ -0,0 +1 @@
+../src/libs/

install/ui/js/plugins

@@ -0,0 +1 @@
+../src/plugins/