More bugfixes

BugFixes :

• Less crash should happen when editing the menu.
• "Merge" is now prevented from being use on animations and folders on
  different levels

More functionalities and some bugfixes

New functionalities :

• Handle loading of multiple folders or multiple plugins whenever the
  user add one during editing.

• Load plugin now open folder containing last generated plugin

• Added Merge action

Removal

Removed QLCDNumber displaying number of animations found -> Useless

Bugfixes:

• [CRITICAL] Convert AnimTreeItem seen as TreeItem back to correct class.
• [CRITICAL] Insert parent now supports multi-level selection

Second alpha release

Second alpha release of the tool.

Changes :

• Improved Style
• Improved Robustness (In case installation folder have not been set, a file dialog window now pop-up)

First alpha release

This is the first release of the tool and also my first time publishing an executable. If you have any issues, suggestion, don't hesitate to open a ticket.