restructuring the entire codebase
Merge branch 'master' of https://github.com/dorelmatei/DataLS

Conflicts:
	.DS_Store
	Doc/big_data_platform.txt
	Doc/documentation
	codebase/pom.xml
	datals-doc/big_data_platform.txt
	datals-doc/documentation
	documentation/1.requirements/big_data_platform.txt
	documentation/7.others/useful_links.txt