- Add food production as a column within the Govern -> Colonies table.

- Add a keyboard shortcut for "Build Mining Base" while an asteroid field is selected. Currently, the user needs to move their mouse across the screen several times over when developing an asteroid belt for a single system (which can get very tiring when a large monitor is used...)

- When perusing the "Govern Planet" sub-dialog (the one where you choose whether to set a research/wealth/production governor), if the user presses either the ESC or ENTER key the dialog will close. However, their choices/changes will not be saved. User selection should be saved when exiting the dialog through at least one keyboard shortcut.