Change DB ERD

Version 3
UPDATED DB ERD

ERD with the relationship implemented
Note: the arrow head indicates MANY relationship
one ---> many
Updated to latest version

It has the old version were there wasn't a drop down
Create .gitignore
Stopped tracking dwsync.xml
Merge remote-tracking branch 'origin/bea'
Merge remote-tracking branch 'origin/mele'
Merge remote-tracking branch 'origin/master' into seini