alerting

Hi,

first thanks for this awesome software. But I have some trouble and I don't know how to proceed. First I try to find out what else I could provide for this report to be a good bug report.

First, I use the latest version (v1.14.0) from openSUSE build Service. I know, I should compile it by my self to avoid any other causes for this behavior. But for now I still use this package from there

Steps to reproduce:

1. Try to tab through the home dashboard

Actual Result:

![Screenshot from 2021-07-06 14-28-57](https://user-imag

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另外，我们是在做开源软件，不是服务于您的企业，做您的乙方，您一分钱没付，就不要颐指气使了，认同我们这个社区，则参与进来，不认同，就不参与，谢谢理解

Please can you add Pushover alerting to gatus (which is great BTW!)

Details on how to send pushover alerts can be found here - https://pushover.net/api

I have managed to get this working using the custom alert, but it's quite clunky and requires encoding the user key, api key, message, etc. in the custom alert body text.

Thanks

Has anyone done this safely?

If we can't open port, then lets do something like:

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Addr