1) + ImejiRestTest.java: parent class for all integration tests
2) + ItemTest.java: item rest api integration test. Start implementation: update item
Merge branch 'develop' of https://github.com/imeji-community/imeji into develop
+ TestUtils.java
init itemUpdate rest api
Merge branch 'develop' of https://github.com/imeji-community/imeji into develop

Conflicts:
	src/main/java/de/mpg/imeji/rest/api/ItemService.java
	src/main/java/de/mpg/imeji/rest/process/ItemProcess.java
	src/main/java/de/mpg/imeji/rest/process/TransferObjectFactory.java
	src/main/java/de/mpg/imeji/rest/to/MetadataTO.java
	src/test/java/de/mpg/imeji/rest/resources/test/integration/CollectionTest.java