Kexi: add d-pointers to classes (part 2)
completed by: Andrey Inishev
mentors: Jarosław Staniek
Note: This this part 2 of the task Kexi: add d-pointers to classes. It's basically the same task but was just splitted to two smaller parts so two students can work on parallel.
Goal: Improve internal APIs in Kexi. This can be done easily by introducing d-poitners to classes that lack them.
Average C++ needed, at least beginner, Qt knowledge welcome.