Refs #126 Removed the magic.

o EMSMainViewController now starts a sync when first loaded if there is no sessions found in search.
o Removed the sync code from EMSAppDelegate
o We no longer automatically start a sync of sessions when a new «active conference» is stored in the user defaults. Instead we do this in the unwindSettingsSegue again.
#Refs 126 Forgot to commit the project file. You might need to readd your EMS-Config.plist to the build settings.