Make the grammar practice selection much better.

Make the grammar practice selection much better.
In the config dialog one can check the grammar tests to use now. This also allows for adverb (mixed with adjective or alone) tests.
Give the doc default grammar when using the wizard.
Rewrite the type for test selection funtion as checkType.
Deprecate a function that probably doesn't work, esp if multiple word types are allowed to share a special type.
BUG: 106451

svn path=/trunk/KDE/kdeedu/libkdeedu/; revision=714050