Initialize and update Function list box properly

* Add dispose methods to CommandCategortListBox
* Cast the commands list to SfxConfigFunctionListBox
* Update the glade catalog to include CommandCategoryListBox widget
* Borrow and adapt FillFunctionsList method from SfxConfigGroupListBox
* Create and setup proper SelectHDL(s)

Now the command list box (Function box on the left) is properly
populated and updated upon selection of a category from the categories
list box.

Implemented for the Menu and Context Menu tabs.

Change-Id: I30ebe89e80bdb2c5b686a26acb7c1ab1178b7525
Reviewed-on: https://gerrit.libreoffice.org/40968
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

0 files changed, 0 insertions, 0 deletions