Cleaned up imports.
Improved extensibility.
Merge branch 'master' of https://github.com/cloudstore/cloudstore.git

Conflicts:
	co.codewizards.cloudstore.rest.client/src/main/java/co/codewizards/cloudstore/rest/client/request/BeginPutFile.java
	co.codewizards.cloudstore.rest.client/src/main/java/co/codewizards/cloudstore/rest/client/request/Move.java