Production Queue: Produce last item again

**Issue by [JHCD](https://github.com/JHCD)**
_Saturday Mar 18, 2017 at 20:40 GMT_
_Originally opened as https://github.com/CQUI-Org/cqui/issues/409_

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In the endgame, my cities often produce the same thing continuously.
But I don't want a long production queue to have a look on the cities regularly.
So I have to scroll the long list down every time to find the item I want to produce again.

I wish a "produce again" function in the city-view.
Recommendet directly beside the "production finished" text.


Start with the city-view production queue and locate the existing “production finished” text and queue interactions. Trace how the currently completed item is represented, then determine where a “produce again” action could be exposed beside that text. Done means the action is available in the city view and repeats the last production choice without scrolling through the queue.

Written by the indexing model from the issue text.