Added comments and some refactoring to new files

src/app/core/shared/bitstream-format.model.ts

@@ -2,24 +2,54 @@
 import { CacheableObject } from '../cache/object-cache.reducer';
 import { ResourceType } from './resource-type';
 
+/**
+ * Model class for a Bitstream Format
+ */
 export class BitstreamFormat implements CacheableObject {
 
+  /**
+   * Short description of this Bitstream Format
+   */
   shortDescription: string;
 
+  /**
+   * Description of this Bitstream Format
+   */
   description: string;
 
+  /**
+   * String representing the MIME type of this Bitstream Format
+   */
   mimetype: string;
 
+  /**
+   * The level of support the system offers for this Bitstream Format
+   */
   supportLevel: number;
 
+  /**
+   * True if the Bitstream Format is used to store system information, rather than the content of items in the system
+   */
   internal: boolean;
 
+  /**
+   * String representing this Bitstream Format's file extension
+   */
   extensions: string;
 
+  /**
+   * The link to the rest endpoint where this Bitstream Format can be found
+   */
   self: string;
 
+  /**
+   * A ResourceType representing the kind of Object of this BitstreamFormat
+   */
   type: ResourceType;
 
+  /**
+   * Universally unique identifier for this Bitstream Format
+   */
   uuid: string;
 
 }