repository with collection of shadows
Empty Object pattern for  StorageHandler
package name refactored
dummy replicate method
Merge branch 'master' into feature-repository

Conflicts:
	dfs-server/src/main/java/rso/dfs/model/dao/psql/DFSDataSource.java
	dfs-server/src/main/java/rso/dfs/model/dao/psql/DFSRepositoryImpl.java
	dfs-server/src/main/java/rso/dfs/server/DFSServer.java
	dfs-server/src/main/java/rso/dfs/server/ServerHandler.java
after merge conflicts fixes
repository thread
Merge branch 'master' into feature-repository

Conflicts:
	dfs-server/src/main/java/rso/dfs/server/DFSServer.java
	dfs-server/src/main/java/rso/dfs/server/ServerHandler.java
after merge fixes
Programista płakał jak kodził
Programista płakał jak kodził #2