server: propagate context to storage layer (#455)

This change propagates the context of the actual user request through.
Additionally it configures the Storj Backend to do in memory buffering instead of relying on temporary files in /tmp/ folders.
Fixes #448

server/server.go

@@ -426,11 +426,11 @@ func (s *Server) Run() {
 
 			_, err = htmlTemplates.New(stripPrefix(path)).Parse(string(bytes))
 			if err != nil {
-				s.logger.Panicln("Unable to parse template")
+				s.logger.Println("Unable to parse html template", err)
 			}
 			_, err = textTemplates.New(stripPrefix(path)).Parse(string(bytes))
 			if err != nil {
-				s.logger.Panicln("Unable to parse template")
+				s.logger.Println("Unable to parse text template", err)
 			}
 		}
 	}