After I86bc6d975223979c19d94a3fd70e4b5130b73f47 it's possible for
qmldir to have the module declaration again.  The reason it was
absent was that src/imports/dialogs/plugin.cpp was registering
new types in initializeEngine.

Change-Id: I6b28a3b97df7f7817cfdc1e745c4ce6f048302f1
Reviewed-by: Liang Qi <liang.qi@digia.com>
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>