datacheck.php hidden system support

[yakra]

Preliminary support for hidden systems is on tmtest for the moment:
https://tmtest.teresco.org/devel/datacheck.php?show=COMBINE_CON_ROUTES

System & Region filtering are broken, most likely due to trying to JOIN on a route not in the DB.

Would have to either

• add hidden system info to the DB, which I'm not thrilled about, or
• add new columns to the datacheckErrors tabke for system & region. I like this better

[michihdeu]

The first showroute link at COMBINE_CON_ROUTES for hidden systems is missing. It's fine for preview and devel. Dunno about active. @yakra

[yakra]

I know, noted over here.

This problem is not actually that the 1st one is missing, but that the 2nd one was still there.
Neither should be there for hidden systems, which don't go in the DB at all.

If you still have the page open (it's been updated) and you still have a link in the Info column for a hidden route, click on it and you'll get a broken showroute page.