Few UI fixes/improvements

[John_C]

1. If you are in the location "Computer", since this location is the uppermost, the "Up" icon on the toolbar should be grayed out.

up.png

2. The branch view only works in the "Details" and "Details with Thumbnails" views. If you use another view, e.g. "Thumbnails", enabling the branch view won't make any difference for you. There should be some trick instead.

3. "Undo" and "Redo" should also work for things like applying labels and comments.

4. Things like labels and comments should not be lost when you restore a file/directory from the Recycle Bin.

5. If the pane is inactive and shaded (Configuration > Shade inactive pane), XY should disable the grid (if you use it, or course. Tools > Customize List > Show Grid). This is because light-blue on light-gray doesn't really look good. Disabling the grid should be optional, not mandatory.