Merge branch 'master' of https://github.com/Teeed/cloudsync

Conflicts:
	src/main/java/pl/edu/pk/sem4/javaproject/cloudsync/filesystem/TrackedFile.java
LastModifiedDiffer implemented.
Removed bad code
Improved LastModifierDiffer class.
LastModifiedDiffer class changed dramaticly.
Implemented some cool Differ tests.
Merge branch 'master' of https://github.com/Teeed/cloudsync
LastModifierDiffer finnaly works (version 5).
Code view format.
Changeset has now swapped arguments, DifferTest is now works fine :)
Implemented Synchronizer
Code formatting, package renaming
Merge branch 'master' of https://github.com/Teeed/cloudsync

Conflicts:
	src/main/java/pl/edu/pk/sem4/javaproject/cloudsync/LastModifiedDiffer.java
Deleted LocalListFile, fixed CloudFilesystem when files.xml file is missing, App.main stub
Tests are now using JUnit 4
Changed visibility of some fields, removed unnecessary getters/setters
Added constructor in Filelist
Tests now work well in maven
Added test that tests Changeset merging
Organized imports, changed LocalFilesystem.path accessibility