Display certificate Info (#1)

[chakflying]

Towards supporting #1

Got basic certificate info display working. The UI is very barebones, but should be functional.

Database migration now added. Front and back end now uses the URL() object as uniform access to helper methods.

Notification features are not implemented.

[louislam]

Great! I can improve the UI. And I am implementing the db migration.

[chakflying]

BTW I totally forgot an elephant in the room, should NODE_TLS_REJECT_UNAUTHORIZED = '0'; be set as default? In order for my code to obtain the status of self-signed certs, we have to set this so the request doesn't throw error. But this will have the side effect that websites with self-signed certs will now be shown as up, whereas they are shown as down currently.

[louislam]

But this will have the side effect that websites with self-signed certs will now be shown as up

Due to this reason, I would prefer to keep current setting.

[chakflying]

I guess an alternative would be to add a per-monitor setting to rejectUnauthorized to deal with self-signed, which statping has this.

[louislam]

@chakflying arrr, your git commits did not bind to your GitHub account. Your name is not appearing in the "Contributors" section because of this sadly.

I guess an alternative would be to add a per-monitor setting to rejectUnauthorized to deal with self-signed, which statping has this.

This maybe a better solution. With a on/off button in the add/edit monitor page.