project: use qmldir for QML singletons registration

This simplifies registration and helps with IDE Intellisense for singleton components.

Change-Id: Ifb424491c0fa4777ecc76ec947d57287eea94cfc

CMakeLists.txt

@@ -219,6 +219,7 @@ execute_process(
   ${PYTHON_EXEC} ${SCRIPTS_DIR}/gen_qml_qrc.py ${GEN_QRC_ARGS}
   WORKING_DIRECTORY ${APP_SRC_DIR})
 set(QML_RESOURCES_QML ${APP_SRC_DIR}/qml.qrc)
+
 # Image and misc. resources
 # check files in the resources directory and force a reconfigure if it
 # changes
@@ -230,6 +231,11 @@ execute_process(
   WORKING_DIRECTORY ${APP_SRC_DIR})
 set(QML_RESOURCES ${APP_SRC_DIR}/resources.qrc)
 
+# Find modules (QtCreator) under the root source dir.
+list(APPEND QML_DIRS ${APP_SRC_DIR})
+set(QML_IMPORT_PATH ${QML_DIRS}
+  CACHE STRING "Qt Creator extra qml import paths" FORCE)
+
 # library compatibility (boost, libnotify, etc.)
 add_definitions(-DQT_NO_KEYWORDS)