Fixed bug that caused nullPositerException if null was passed in
SyncableArraylist constructor
Merge remote-tracking branch 'origin/dev-model' into dev-model
Fixed bug that caused Listeners in Order to missbehave
Implemented more tests
Made sync in Syncable Reflexive
Changed implementation of addTask and removeTask.
Added equals tests for Model objects
Improved adding and removing products
Merge branch 'dev-model' of github.com:Farenheight/Lidkoping-SH into dev-model