Updated library to work with the new asset/dispatch endpoints

[mjschuetze102]

New Features:

• Added additional application management service endpoints
  • GetApplicationInfo - Retrieve detailed information about the application
  • UpdateApplication - Update information about the application
• Added additional course service endpoints
  • GetCourseAsset - Downloads an asset file from a course
  • GetCourseVersionAsset - Downloads an asset file from a specific course version
  • GetCourseFileList - Gets the file structure of a course
  • GetCourseVersionFileList - Gets the file structure of a specific course version
  • DeleteCourseAsset - Deletes an asset file from a course
  • DeleteCourseVersionAsset - Deletes an asset file from a specific course version
• Added additional dispatch service endpoints
  • UpdateDispatches - Updates a group of dispatches simultaneously
  • DeleteDispatches - Deletes a group of dispatches simultaneously

Updates:

• Standardized parameter list for several endpoints. This involved adding additional parameters to several endpoints as well as reordering the parameters
  • GetCourses
  • GetDispatches
  • GetDestinations
  • GetDestinationDispatches
  • GetAllInvitations
  • GetPublicInvitations
  • GetPublicUserInvitations
  • GetPrivateInvitations
  • GetPrivateUserInvitations
  • GetRegistrations
  • GetXapiCredentials
• Changed the schema for several endpoints to only include the values that can be modified
  • CreateApplication
  • UpdatePublicInvitation
  • UpdatePrivateInvitation
• Removed cssUrl parameter from BuildCoursePreviewLaunchLink. The cssUrl in the LaunchLinkRequestSchema remains unchanged
• Removed JUnit dependency