What does "all the more" mean and how is it used?

Here is a sample context:

As you might expect, the framework also provides some convenience classes to make the task of writing custom validators all the more agreeable.

(Emphasis added.)

The general answer seems to be that all the more is an idiomatic way to say even more (http://en.wiktionary.org/wiki/all_the_more). Of course, that raises the question of the comparative -- even more than what? My sense is that in the phrase all the more, this is often (always?) left implied, and that all the more is really just an intensified version of more.

I guess all the more is meant to mean [!] that much more, more in proportion to something else. Like: if you are kinder I'll love you all the more.