Library/Default URL Overrides

[mhmatthewhugley]

The examples mentioned on GitHub would be great to have in the app, at least the HTTPS one as a default option.
This could be implemented with a toggle feature, allowing users to turn it on or off.
Alternatively, it could be added via a menu library item to avoid taking up space for users who do not intend to use it.

[AChep]

As a part of the feature, fbbe27d this commits adds an ability to Enable/Disable the URL override without needing to add/remove it

[AChep]

As a part of the feature, a874d88 this commit adds HTTPS-ify by default

[AChep]

I think what we have now should be enough (a link to the page with examples). URL Overrides is a complex feature anyway and I don't see many universal solutions.