Add new tests for UpdateShoppingBag
Add new methods and locators for work with UpdateShoppingBagTests
Merge branch 'master' into AlexanderSavenok

Conflicts:
	src/main/java/core/pages/ShoppingBagPage.java
	src/main/java/test/UpdateShoppingBagTest.java
Add new methods for work with UpdateShoppingBagTests
Merge pull request #19 from EvgeniiBorisik/AlexanderSavenok

Alexander savenok add new tests and methods