several feature requests

[greatUnknown]

A. In the production screen, instead of just clicking on the R and L arrows by the city name,
the following two options:

1) a kbd option such as right-arrow and left-arrow

2) a kbd option that would only scan through cities without current production,
e.g., ctrl-right and ctrl-left

otherwise, the only choice I found is to keep returning to map and pressing "choose production"


B. An option to sort the list of cities in the economy screen by type of production. This would make
it easier to determine how many tanks or troopers are being produced without going through
the whole screen.

C. When in the production screen, a mini-map showing where a city is in relation to the main map.