MM-10007 Send an admin and regular WS events when a user is updated (#8588)

* Add user.DeepCopy() function

* Add omit admins/non-admins to WS broadcast and use for updating users

* Updates per feedback and adding unit test for ShouldSendEvent

model/user.go

@@ -96,6 +96,23 @@ type UserAuth struct {
 	AuthService string  `json:"auth_service,omitempty"`
 }
 
+func (u *User) DeepCopy() *User {
+	copyUser := *u
+	if u.AuthData != nil {
+		copyUser.AuthData = NewString(*u.AuthData)
+	}
+	if u.Props != nil {
+		copyUser.Props = CopyStringMap(u.Props)
+	}
+	if u.NotifyProps != nil {
+		copyUser.NotifyProps = CopyStringMap(u.NotifyProps)
+	}
+	if u.Timezone != nil {
+		copyUser.Timezone = CopyStringMap(u.Timezone)
+	}
+	return &copyUser
+}
+
 // IsValid validates the user and returns an error if it isn't configured
 // correctly.
 func (u *User) IsValid() *AppError {