Added Test for GET /fiddles/fiddle for private fiddle
Added Test for GET /fiddles/fiddle for private fiddle

esfiddle/esfiddle,asiyani/esfiddle,vcapretz/esfiddle,asiyani/esfiddle,esfiddle/esfiddle,joshghent/es6-fiddle-web,collinmesser/esfiddle,esfiddle/esfiddle,collinmesser/esfiddle,joshghent/es6-fiddle-web,vcapretz/esfiddle