Update strings.txt

Reihenfolge der Beschreibungen (in strings.txt!!!!) zu left, right, up, down geändert
Grid.returnmatrix
Merge branch 'master' of github.com:Mrmaxmeier/MaxMeier-s_Railroads
fixed main tilenames
fixed part of stringsfile& strings.txt
Merge branch 'master' of github.com:Mrmaxmeier/MaxMeier-s_Railroads

Conflicts:
	stringsFile.py