Errors thrown when user have slow loading time / slow connection

[Araxeus]

YoutubeNonStop/autoconfirm.js

Lines 91 to 101 in 7b6b97b

	function observeApp() {
	debug(`Observing ${appName}...`);
	appObserver = new MutationObserver((mutations, observer) => {
	overrideVideoPause();
	});
	appObserver.observe(document.querySelector(appName), {
	childList: true,
	subtree: true
	});
	}

If using this extension with a bad loading time, you start to get errors that the "Node" is not defined in appObserver.observe.

Should probably check if it has loaded first, maybe something like this:

function setup() {
    if (document.querySelector(appName)) {
        observeApp();
        return;
    }

    const observer = new MutationObserver(() => {
        if (document.querySelector(appName)) {
            observer.disconnect();
            observeApp();
        }
    })

    observer.observe(document.documentElement, { childList: true, subtree: true });
}

[Nomes77]

I also get messages that I have no internet connection.

[Nomes77]

This issue could be solved by #43
However, I still get that message.
So I think it has something to do with Youtube self.