ADD: Remaining half-height images for bridges

git-svn-id: https://svn.code.sf.net/p/simutrans/code/pak128.Britain@1441 e96eaf88-093e-0410-925f-862d53288611
ADD: New planes (Milko)

git-svn-id: https://svn.code.sf.net/p/simutrans/code/pak128.Britain@1442 e96eaf88-093e-0410-925f-862d53288611