Reverted removal of datanav2 (it's in working-1.0 now)

This reverts commit 7478b6c6e71b7c6b82fff0a59a2c6284fd353b30.
Revert "Removed GridHeaderPaint event."

It's in working-1.0 now.

This reverts commit e133d28541851f10dbeea173c06ce1ecc7efd309.
Revert "Removed self.super() and self.doDefault()."

This is in working-1.0 now.

This reverts commit 057a4d3592706bf7e23408463f8f9188ecac4b8d.
Revert "Settings changes for 1.0"

It's in working-1.0 now.

This reverts commit 9eba44f7cfe17abf58827a3967f09ac9a0a582f3.