Add toolbar to download queue for common operations

[Fredrik Ullner]

Common operations that users perform in the queue should be available in the form of a toolbar for ease of access. The following items are identified to at least be part of said toolbar;
* Pausing a queued item
* Resuming a paused queued item
* Move queued items up/down in priority
* Remove a queued file

[Fredrik Ullner (ullner)]

The attached patch will add a toolbar to the queue.

Picture of how it looks: http://imgur.com/aPBx7Qi

This toolbar is static; it is always present (with enabled/disabled items).

iceman had otherwise the proposal that the toolbar should be only visible when items are selected, but this is not included in this patch.

"Start" will set items in Normal. "Pause" will set items in "Paused".

Note that paused items will get disconnected (hence change to queuemanager).

[iceman50 (bdcdevel)]

New icons

[Fredrik Ullner (ullner)]

Update of patch, as per suggestions. New Icons: http://i.imgur.com/WAid7Nh.png

[poy (poy)]

the patch looks very good. :)

if you could verify this still works with the current repo, and polish if necessary, this can go in after DC++ 0.850 has been released.

[Fredrik Ullner (ullner)]

This is now pushed.

[eMTee (realprogger)]

IIRC from last year's testing, this patch does the minimal functionality but has bugs. E.g., again if my memory serves well, button functions don't handle things well when applied to items selected in the directiory tree view in the left.

Also the new icons were in some work-in-progress state, their green/red colors needs to be checked to ensure they're similar to the ones already used in other existing buttons in the UI.

[Fredrik Ullner (ullner)]

The code now works with directories.

I can't comment to the icons, I just picked above icons as previously proposed.

[poy (poy)]

Fixed in DC++ 0.860.