Adds modern webui as a submodule. Contains changes in the specfile to
include the `dist` folder of modern webui.
Edits Apache httpd template to allow routing to modern webui, however
old ui is still the default.
Requires https://github.com/freeipa/freeipa-webui/pull/695 to be merged.
Signed-off-by: David Hanina <dhanina@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
