Add option for self-signed certs (TLS/SSL)

I like to use encryption (SSL/TLS) with self-signed certificates. For this it would be nice to add an easy option to support this.

[EternallLight]

I've faced the same issues and agree.

[uvups]

Yes, please add an easy option. 👍

[ox160d05d]

I completly agree with the author.

[fabpot]

Anyone willing to make a pull request to add this feature?

[ox160d05d]

fabpot, how about this?
#141

[Adambean]

At the very least could we be able to accept CA's in the system's trusted CA store?

I ask this because our company web servers (6 of them) use WHM with certificates signed by our own CA. This isn't quite as ideal as expensively getting a common trusted CA for each server, but it's one step better than self-signed due to there being some form of signature chain in place.