Issue #3 resolved
Improve SHIFT key handling in entry context menu
When the icon has the ... suffix, the mount dialog is shown.
When the icon not has these suffix, the mount dialog isn't shown, mount process started directly.
- Menu-Item invisible: Hold SHIFT key -> item shown with ...
- Menu-Item visible without ... : Hold SHIFT key -> item gets ...
- Menu-Item is visible with ... : Hold SHIFT key -> Mount process starts directly without mount dialog.