null check
New courier: TNT
Spring Boot 1.2
TNT details add
New courier: UPS
Merge branch 'master' of github.com:pawelantczak/org.antczak.backend

Conflicts:
	src/main/java/org/antczak/backend/packages/couriers/DHL.java
	src/main/java/org/antczak/backend/packages/couriers/DPD.java
	src/main/java/org/antczak/backend/packages/couriers/Fedex.java
	src/main/java/org/antczak/backend/packages/couriers/KEX.java
	src/main/java/org/antczak/backend/packages/couriers/Paczkomaty.java
	src/main/java/org/antczak/backend/packages/couriers/Poczta.java
	src/main/java/org/antczak/backend/packages/couriers/Siodemka.java