server, examples, extensions lint compliant (#1109)

these are all automated changes suggested by golint

api/server/call_logs.go

@@ -16,10 +16,10 @@ import (
 // note: for backward compatibility, will go away later
 type callLogResponse struct {
 	Message string   `json:"message"`
-	Log     *CallLog `json:"log"`
+	Log     *callLog `json:"log"`
 }
 
-type CallLog struct {
+type callLog struct {
 	CallID string `json:"call_id" db:"id"`
 	Log    string `json:"log" db:"log"`
 }
@@ -28,7 +28,7 @@ func writeJSON(c *gin.Context, callID string, logReader io.Reader) {
 	var b bytes.Buffer
 	b.ReadFrom(logReader)
 	c.JSON(http.StatusOK, callLogResponse{"Successfully loaded log",
-		&CallLog{
+		&callLog{
 			CallID: callID,
 			Log:    b.String(),
 		}})