Fix broken links to old user guide

[MGatner]

No description provided.

[lonnieezell]

Thanks for these! I haven't had time to update this code and finish it actually, so I'm sure it's in pretty rough state. But definitely open to contributions! :)

[MGatner]

Definitely! I mentioned on the CI forums (https://forum.codeigniter.com/thread-73060.html) that I'm porting over my CI3 libraries, and one of them is a lightweight Auth that I'm trying to decide if it is worth it. I'm quite interested in this library of yours for a full kit (and if I don't end up recoding the other one) so let me know how I can help!

[lonnieezell]

Part of what I'd been waiting on was for beta1 to get out since it had some fixes for testing and I was planning on beefing up the test code on here. A lot of this was ported from CI3 stuff so want to make sure I didn't miss anything, and just provide a good test bed anyway.

Aside from that - the next steps would likely be:

• verify architecture/interfaces work to be able to build other authorization systems (like JWT being my next planned one)
• creating a Toolbar collector that shows the current user
• flesh out docs
• and probably other stuff I can't remember at the moment.

I had put this on hold a little until CI4 was about ready for release so I could focus more of my time on getting that ready. Then I'd come back and finish up this and Vulcan.