refactor: consolidate checkSize() into getZoneSizeFor()

git-svn-id: http://micropolis.googlecode.com/svn/trunk@790 d9718cc8-9f43-0410-858b-315f434eb58c
tiles.rc: control airport radar animation through tiles.rc

instead of in the java code

git-svn-id: http://micropolis.googlecode.com/svn/trunk@791 d9718cc8-9f43-0410-858b-315f434eb58c
evalLot: replace hardcode tile number comparisons with isRoad/isRail

git-svn-id: http://micropolis.googlecode.com/svn/trunk@792 d9718cc8-9f43-0410-858b-315f434eb58c
cleanup: remove a couple lines of code not needed

git-svn-id: http://micropolis.googlecode.com/svn/trunk@793 d9718cc8-9f43-0410-858b-315f434eb58c
cleanup: remove constants that are not being used

git-svn-id: http://micropolis.googlecode.com/svn/trunk@794 d9718cc8-9f43-0410-858b-315f434eb58c
cleanup: TileConstants- hide constants that don't need to be visible

git-svn-id: http://micropolis.googlecode.com/svn/trunk@795 d9718cc8-9f43-0410-858b-315f434eb58c