trying to add log4j
refactured some methods
no changes
refactored to use FileHolder class
refactured
some editing
added new class
some editing
some editing
refactured
Merge branch 'master' of
ssh://git@github.com/roman1990/File-Explorer.git

Conflicts:
	File Explorer/src/file_explorer/MainWindow.java
	File Explorer/src/file_explorer/MouseActionListener.java
	File Explorer/src/file_explorer/TableModel.java
	File Explorer/src/file_explorer/TableModelRefactured.java