Updates for focus in panels
signal updates
Fixed button clicked function
Updates observer for action_bar(Still incomplete)
Merge pull request #15 from lisandro-montano/master

Merge pull request #14 from lisandro-montano/develop
Methods to obtain origin and target paths
Implement copy function between panels
Fix folders copyproblem
Fixed typo in panel_manager method
Implemented move method for panels
Fixed indentation problems
Implemented delete method and confirmation modal
Added shortcuts for action bar
removed warnings from panel manager(not used)
Fixed problem with unselected items
Fixed path ending problem
Minor updates
Code Review corrections
Merge pull request #16 from lisandro-montano/feature-copy-item

Feature copy item, move item and delete item
Add the Porperties View

Add the properties file and the dialog to view the file info