Categorize the ydd list instead of having all items on a single continuous list

[thoubias95]

Now all the ydd files are listed in the box on the left as a single, continuous list. When you have hundreds of files in the folder you are trying to scroll through, the list is a bit hard to navigate.

I propose changing the box on the left so it has two dropdowns, female and male, which have dropdowns for each of the ydd categories (jbib, feet, etc.) inside, and list the relevant ydd files under those. That way you can have more clear list of what you are concerned about, and can more quickly get to what you want. The default state for the dropdowns when opening the tool would be closed. And then it would not close or open those dropdowns automatically when you open new folders during the same session, but instead remember which ones you had open. The dropdowns could still exist and just be empty if there was no folder loaded or no objects for the particular category inside the opened folder.

And it still doesn't have to prevent you from scrolling through all articles with the arrow keys like it now does. If the next object would be in an unopened dropdown, it could just opens the dropdown and pick the first object under that.