[TYPO3-core] RFC: #4690: TCAdefaults.tt_content.imagecols = 1 is missing

[Benjamin Mack]

Hey Steffen,

OK, I see the point. But what happens to all the existing installations, 
especially when I have "0" in my DB, then I would get an [invalid value] 
on every existing installation, am I right?

Then we'd need a installer DB updater class, similar to what we did with 
the doktype=2, right?

All the best,
Benni.