Add XY plots according to stations and function to prevent crash due to GEMGeometry.

Hello,

1. I added Global XY plots of stations 1,2,3.
-  Cesare found missing plots. 

2. Then, I added function to prevent crash due to lack of GEMGeometry.
-  I added to check GEMGeometry  can be loaded on module class.( plugin directory)
   If GEMGeometry can not be loaded, these modules will not run submodule.
   So, this checking can prevent crash.