Image Manager - Files Pane

Add a side by side view for when the Files pane is expanded, one can click on the file name and view the image file in the other pane. Add a right mouse click pop-up context menu on both panes providing shortcuts for actions such as copy/move, rename, rotate, etc. Add ability to select multiple files from the file pane to to modify the selected file(s) in several ways: rename, rotate, etc.