Restore potential flow

Author: jginternational

kratos.gid/apps/Examples/xml/examples.xml

@@ -15,6 +15,7 @@
     <link path="apps/FluidDEM/examples/examples.xml"/>
     <link path="apps/Dam/examples/examples.xml"/>
     <!-- More -->
+    <link path="apps/PotentialFluid/examples/examples.xml"/>
     <link path="apps/EmbeddedFluid/examples/examples.xml"/>
     <link path="apps/MPM/examples/examples.xml"/>
 </examples>