users/faq: Add nuance to nested folder statement (fixes #428)

[imsodin]

My intention was to keep it not recommended, but make it clear that it can be done and mention the one know catastrophic case (circular includes) - I don't think explaining any further is useful, if the user doesn't understand what circular includes are, they just shouldn't do nested folders (or do research aka read the forum).

[AudriusButkevicius]

It doesn't explain what that circular thing is. There are other caveats seeing your own changes as conflicts etc.

[thomas-zmo08179]

@imsodin , if you say "it can be done successfully when you know what you're doing", what would you recommend?
DeviceA <-----> DeviceB <------> DeviceC

[imsodin]

It doesn't explain what that circular thing is.

First comment:

I don't think explaining any further is useful, if the user doesn't understand what circular includes are, they just shouldn't do nested folders (or do research aka read the forum).

Do you disagree with that?

There are other caveats seeing your own changes as conflicts etc.

PR:

This is just one example, there may be other undesired effects.

I won't try and list all possible caveats -> should I not mention circular includes at all?

@imsodin , if you say "it can be done successfully when you know what you're doing", what would you recommend?

If you read the rest, I don't really want to do recommendations. Most certainly not on the github issue tracker, the forum would be the appropriate place for that.

[calmh]

Honestly this is almost more scary than what was already there :D

[AudriusButkevicius]

I think before it was just don't do it, now it's don't do it because it's beyond what you peasant can understand.