Bug fixes
fixed a city migration bug where the turn cooldown and policy of the migrated city were incorrect
fixed "Extract Aquifer" mandate not being usable on ocean locations
show flood warning popup as appropriate when using the "Extract Aquifer" mandate
fixed "Food Bank" dedication not counting food produced outside of the city
gamepad: fixed an inaccessible city slot in one possible layout of the plain location
gamepad: fixed undo shortcut text shown in red after exploration, which was distracting when using the next turn shortcut
