- DataSource added
- TomCat 8 added

- renamed Connection to Tools, moved to package database
- added itemManagerImpl
- added itemManagerImplTest
- some repairs on ShelfManagerImpl
- some repairs on ShelfManagerImplTest
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/cz/muni/fi/pv168/warehouse/db/Connection.java
	src/cz/muni/fi/pv168/warehouse/tests/WarehouseManagerImplTest.java
- DataSource added
- TomCat 8 added

- renamed Connection to Tools, moved to package database
- added itemManagerImpl
- added itemManagerImplTest
- some repairs on ShelfManagerImpl
- some repairs on ShelfManagerImplTest