Thanks for the quick tip on dropping items. :) I noticed that you can use the "shift + q" to drop all selected items also but it didn't work if you shift-click on the inventory slot.
As for moving items in the inventory, it only allows you to swap items and if your shovel breaks, all the items in your inventory will move closer to the end. I was looking more for a way to move items that I don't really use often to the opposite end.
And before I forget, another thing I found a bit frustrating was when digging or harvesting. If you moved accidentally or slipped on the mouse button, the progress bar would reset and you would have to begin all over again. It would be nice if you could just continue where you left off. I do understand that the progress bar needs to be reset after a certain amount of time has elapsed just so you don't end up with a whole bunch of deposits having different progress bars on them.