[TYPO3-core] wrong error for config.baseURL=1

[Martin Kutschker]

Hi!

TYPO3 dies when you use baseURL=1. It issues this error:

Deprecated Typoscript property was found in this template: "config.baseURL="1"

This is wrong. If it's deprecated it means, it should not be used anymore, 
because support for it will be removed.

But in 3.8.1 it has been removed not deprecated. And not the property is 
deprecated, but the value.

I suggest we change the wording. How about "Forbidden value for Typoscript 
property ..."

Masi