508 Fixes

Addresses #1021 mostly by adding label tags, generating unique element
ids as needed.

In the process, moved the label text that gets set in the
___ContentTypeView.js files to the respective handlebar templates; the
text was static as far as I could tell.

There are additional minor 508 improvements that can be made with the
tables (scope tags, header attributes)

src/main/javascript/view/ParameterView.js

@@ -31,6 +31,7 @@ SwaggerUi.Views.ParameterView = Backbone.View.extend({
     this.model.isBody = this.model.paramType === 'body' || this.model.in === 'body';
     this.model.isFile = type && type.toLowerCase() === 'file';
     this.model.default = (this.model.default || this.model.defaultValue);
+    this.model.valueId = 'm' + this.model.name + Math.random();
 
     if (this.model.allowableValues) {
       this.model.isList = true;
@@ -98,4 +99,4 @@ SwaggerUi.Views.ParameterView = Backbone.View.extend({
       }
     }
   }
-});
+});