FilePanel should mimic Tracker windows

[brecht]

FilePanel should also provide the popup menu that appears when "<n> items" in the bottom left of a Tracker window is clicked. This makes the drop-down list that sits above the file list view obsolete. The latter is less versatile, afterall.

I would personally also find it handy to have the Tracker navigator at the top of FilePanel, so that one could quickly navigate the file system with the help of the buttons or enter a path by keyboard.

Adding Tracker's "Window" menu with some of its items might also be helpful. Especially when a thumbnails view mode might get added in the future.

[jonas.kirilla]

buggy tracker patch

[jonas.kirilla]

This patch turns on submenus in the top menufield and turns on the popup menu of the CountView in the bottom-left of the listview. It needs more changes to work right, as testing will show. They get out of sync. It can be criticised from a logical and aesthetic point of view as well. The popups are in reverse order relative to one another. One includes the current directory and the other does not. All of these things can be changed, but I think it would still feel cluttered.

A breadcrumb bar would seem better for the future. (Which could double as a path input box, by shortcut or a button press.)

[waddlesplash]

Reverting earlier milestone change