Fixed some non-working things

[jachus]

No description provided.

[norkunas]

@jachus thanks for PR.
What's the reason for moving 'app_id' => $this->api->getConfig()->getApplicationId() to the URL part?

[jachus]

Hello! app_id is a GET parameter, by the documentation: https://documentation.onesignal.com/docs/players-view-devices

[norkunas]

Hello @jachus, yes I know about that, but it worked for me also when i sent requests with app id in request body. But ok we should use this like documentation states. Could you open a new PR for this? Because this should be fixed also in notifications endpoints.

Also what's with 'offset' => filter_var($offset, FILTER_VALIDATE_INT) ? filter_var could return false now, so i don't understand this change.