Added relation between EventSchedule and program model
Added relation between EventSchedule and program model

Program has many event_schedules through schedules

openSUSE/osem,BelieveC/osem,namangupta01/osem,differentreality/osem,SeaGL/osem,namangupta01/osem,hennevogel/osem,kormoc/osem,namangupta01/osem,rishabhptr/osem,openSUSE/osem,SeaGL/osem,namangupta01/osem,kormoc/osem,differentreality/osem,rishabhptr/osem,BelieveC/osem,differentreality/osem,differentreality/osem,AndrewKvalheim/osem,AndrewKvalheim/osem,bear454/osem,bear454/osem,AndrewKvalheim/osem,BelieveC/osem,rishabhptr/osem,rishabhptr/osem,kormoc/osem,SeaGL/osem,bear454/osem,bear454/osem,openSUSE/osem,hennevogel/osem,hennevogel/osem,hennevogel/osem,BelieveC/osem,kormoc/osem