make generated server support responses

[casualjim]

Currently the generated server assumes that responses never define headers.

[chakrit]

Seems the generator also ignored responses when multiple entries are defined?

Example operation:

put:                                                  
  tags: ['tweets']                                    
  operationId: 'putTweet'                             
  summary: 'Send a single tweet.'                     
  parameters:                                         
    - name: 'tweet'                                   
      in: 'body'                                      
      description: 'The tweet to post'                
      required: true                                  
      schema: { '$ref': '#/definitions/Tweet' }       
  responses:                                          
    '201':                                            
      description: 'Tweet has been saved.'            
      schema: { '$ref': '#/definitions/Result' }      
    '400':                                            
      description: 'There are validation error(s).'   
      schema: { '$ref': '#/definitions/Result' }      

This result in the following signature being generated for the operation:

type PutTweetHandlerFunc func(PutTweetParams) error 

So no mention of the Result struct there.

[chakrit]

Assuming this is because there is no code in go-swagger to differentiate between different response codes yet?

[casualjim]

I have this for the client on the template-refactor branch, but no such thing for the server yet