[Solid_ec] more LHCb EC files

[Zhiwen Zhao]

Dear All

Here are more files related to LHCb EC
https://hallaweb.jlab.org/wiki/index.php/Solid_Calorimeter#Other_ECAL
They include SPD, preshower, shower construction and test
More files will be added later once we have it.

Just a reminder, anyone wants to have the dropbox folder shared with you 
so that you can have auto update with the folder content, please let me 
know.

Thanks

Zhiwen