context-menu: Add "Reload"
According to Corey's idea, the placement of "Reload" in the context menu is supposed to be close to Windows' design, so I put it as the last item before the first separator, but it could be discussed.
Changes: Add "Reload" to the context view of the file view; remove "Reload" from the column view of the toolbar.
Closes #1860 (closed)
Edited by Yihua Liu