changes to use CommonNetworkService class
Finish Feature-task02Jan2014

Conflicts:
	src/main/java/org/ndexbio/task/FileUploadTask.java
	src/main/java/org/ndexbio/xbel/parser/XbelFileParser.java
cahnges to support common network service
refactored service classes to common package
missed from last commit
Finish Feature--02Jan2014-2