Start file synchronization step (and processes)
Merge remote-tracking branch 'origin/um-queue' into synchronize

Conflicts:
	org.hive2hive.core/src/org/hive2hive/core/H2HNode.java
Start process to upload a file into the DHT
Encrypt the uploaded chunks in hybrid manner
Merge remote-tracking branch 'origin/master' into synchronize

Conflicts:
	org.hive2hive.core/src/org/hive2hive/core/H2HNode.java
	org.hive2hive.core/src/org/hive2hive/core/process/login/PostLoginProcess.java
	org.hive2hive.core/src/org/hive2hive/core/process/login/PostLoginProcessContext.java
Simplify chunking step
Correct the chunking of the file and the initialization of the root
Change name of hybrid encryption method
Complete PutMetaDocumentStep
Store same keys in profile as used for the meta document
Start with the test cases for the upload
Implement step to get the meta document