-Fixed flickering during readme scrolling when mouse cursor was over the readme.
-Fixed: The listed order of readme files could change when re-scanning for readmes.
-Fixed: After re-scanning for readmes, glitchiness could occur when attempting to select a new readme from the dropdown.
-Fixed: The selected FM's cache folder wouldn't be cleared when re-scanning for readmes.
-Fixed: When the readme chooser OK button was clicked, there was no check to make sure an item was actually selected.