Revert "added layer3 to item"

This reverts commit 83a70306f3b015da6574c382338a76bc8824f640.
Revert 26735d2..728c734

This rolls back to commit 26735d2adee5395f3b18b5d1b8775afccdd1ee3c.
Revert 83a7030..4714023

This rolls back to commit 83a70306f3b015da6574c382338a76bc8824f640.
updated uml and cleaned out dependecies