This patch fixes several issues in the popup mode:

• when using the Folder View in 'Icon mode', pressing the right arrow when on a folder would enter that folder instead of just moving the selection to the right
• when using the Folder View in 'list mode', navigating in a subfolder and pressing the right arrow several times while selection is on a file would result in having to press an equal number of times the left arrow before it navigates back to the parent folder
• using the left arrow now only navigates back. Pressing the left arrow while in the 'root' folder of the Folder View was also moving the selection up, which is inconsistent