Updated .gitignore to ignore diagram files
Fixed a javadoc typo
Fixes for generateTestdata
	- Times now calculated correctly
	- Minimun of 1 Transaction per day
Renamed packages to represent company domain
Renamed SingleArticle to AssortmentArticle
Added heredity in class AssortmentArticel
Changed default value for Articlepool to
"C:\Lagerbewegungen\Artikelpool.csv"
Changed method initialiseArticlePool to use Util.readFromDisk
Added throwing of NullPointerException when no testdata availiable to
all Analysis-methods
Assortment is now initialized using a Path of type Path (not String)
Added success message when data is written
Added parameter "message" to method inputPath
Removed a debug-output
Added comments where to change the default-Values