Models names containing / and ~ are displayed with ~1 and ~0 instead

This is a minor display issue related to #4152.

/ and ~ are special characters in JSON Pointers, so when they need to be used literally (as part of a node name) they are encoded as ~1 and ~0, as per https://tools.ietf.org/html/rfc6901#section-3.

# Referencing a model named "foo/bar"
$ref: '#/definitions/foo~1bar'

definitions:
  foo/bar:
   ...

However, in places where the model is referenced, the UI displays the model name incorrectly - still encoded using ~1 and ~0 instead of the actual name with / ~.

Demonstration API definition

swagger: '2.0'
info:
  version: 0.0.0
  title: test
paths:
  /foo:
    post:
      parameters:
        - in: body
          name: body
          schema:
            $ref: '#/definitions/x~1Foo'
      responses:
        200:
          description: OK
          schema:
            $ref: '#/definitions/x~1Foo'
        404:
          description: OK
          schema:
            $ref: '#/definitions/x~0Bar'
definitions:
  x/Foo:
    type: object
    properties:
      bar:
        $ref: '#/definitions/x~0Bar'
  x~Bar:
    type: object

Expected Behavior

Model names everywhere are displayed as x/Foo and x~Bar.

Current Behavior

In places where the models are $referenced, the model names are displayed as x~1Foo and x~0Bar instead of x/Foo and x~Bar.

Possible Solution

N/a

Context

Model names containing / and ~ are displayed correctly in Editor v2:

Start by reproducing the issue with the demonstration Swagger 2.0 API definition in this report, focusing on the Swagger UI locations that render referenced model names. Done means references to models named x/Foo and xBar display those literal names rather than x1Foo and x~0Bar.