Craft can be modded to have sell value.
add cancel button to researchInfo popup

- cancels out of adding a new project
- stops a project that is in progress and refunds any allocated scientists
Added polish translation (thx Krzysztof!)
Load options.cfg with -user parameter

options.cfg outside of default locations is being ignored (bug 157)

Ensure we set up data, user and config folders after creating default
options and before loading options from file and command line.
added aircraft's rent for a month.
added checking to MonthlyCostState: is aircraft researched?
fix: Not restored the button "NewBase" when you delete 8th base.
rare bug: If you have 8 bases and you delete one, the button "Build new base" will not restored.
put less-used cancel research button on the left
Uses facilities icons as shortcuts.
Quick jump to aircraft.
Show aircraft's name in the hangar.
optimization; comments.
Terror units don't run or hide.
melee units prioritize the closest tile to themselves

rather than trying to walk around to the east
melee units will still pick targets, even if they can't move.
nulled craft if getStatus() == "STR_OUT"
added getString("STR_CRAFT_")
units that were shot will turn towards their aggressor
reacting units don't stop turning when they react
don't charge aliens for turning when shooting

stop charging them more than we should