When adding a form file to a project add also its qrc files

Extract qrc paths from ui file by simple xml parsing.

Reviewed-by: dt <qtc-committer@nokia.com>
Reviewed-by: Friedemann Kleint <qtc-committer@nokia.com>
Task-number: QTCREATORBUG-42

src/plugins/qt4projectmanager/qt4nodes.h

@@ -173,6 +173,7 @@ private:
     void save(const QStringList &lines);
     bool priFileWritable(const QString &path);
     bool saveModifiedEditors();
+    QStringList formResources(const QString &formFile) const;
     QStringList baseVPaths(ProFileReader *reader, const QString &projectDir);
     QStringList fullVPaths(const QStringList &baseVPaths, ProFileReader *reader, FileType type, const QString &qmakeVariable, const QString &projectDir);