Fix Swagger JSON autogeneration issues. (#4845)

* Fix Swagger JSON.

Remove unnecessary schema references for the forbidden and empty responses

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Fix swagger API for CreateAccessToken

* Fix admin create org swagger

* Fix swagger for adminCreateRepo

* More swagger fixes

Set int64 format for those which are int64
Some more form fixes

* Fix swagger description of GET /repos/{owner}/{repo}/pulls

routers/api/v1/repo/repo.go

@@ -53,6 +53,7 @@ func Search(ctx *context.APIContext) {
 	//   in: query
 	//   description: search only for repos that the user with the given id owns or contributes to
 	//   type: integer
+	//   format: int64
 	// - name: page
 	//   in: query
 	//   description: page number of results to return (1-based)
@@ -453,6 +454,7 @@ func GetByID(ctx *context.APIContext) {
 	//   in: path
 	//   description: id of the repo to get
 	//   type: integer
+	//   format: int64
 	//   required: true
 	// responses:
 	//   "200":