[Halld-offline] MCwrapper v1.15

[Thomas Britton]

New generator gen_amp has been added.  

The biggest change is the addition of a web-form for requesting MC.  The form can be found https://halldweb.jlab.org/gluex_sim/SubmitSim.html .  Once completed the requester and myself will get an email with information about the job.  Simultaneously the job will be added to a database.  In the future a gui will be developed to allow members to search through already created MC based on run criteria such as run number(s), or Geant version, etc.  The information stored should be sufficient to actually run the job on various batch platforms.  The jobs will then be monitored by the database and coordination of resources should be much easier to manage.  Most of these features/changes should be invisible, so if you have a lot of custom code or enjoy running MCwrapper directly, then keep at it.  But for anyone looking for some more basic MC based on standard release versions then the SubmitForm may be the way to go!

As always minor bug fixes and improvements have been made.