Merge pull request #494 from RotaruDan/externalEditionTool

External edition tools
Moved Video and Picture control interfaces to editor-core.
Added getVideo() and getPicture() methods to Platform.
Fixed Android picture/video control implementation. Fixed other minor bugs.
Adapted eAdventure Mockup Picture and Camera views to the recent changes.
Fixes #462 added command stack to allow several contexts in commands
Updated scene listener to use new commands contexts
Merge pull request #501 from RotaruDan/pictureVideoRefactoring

Picture and video refactoring
ViewHistory to store view updates
Added back/next view operation to Views, with ViewCommand
Change View.NAME for View.class, adapting views to new API Also, in MockupViews, interchange intialize for getView, since their meaning changed: Now, initialize is called first, and then getView.
Path in filelistwidget now is at the top
Added back and next actions to buttons in MainToolbar
Created EditorWindow as main container of the application
Added empty perspectives
Fix AndroidViews onBackPressed
Added equals to ViewUpdate
Merge pull request #504 from anserran/viewscontrol

Added ViewHistory (back and next buttons) and Editor main window
Added three new license types, width and height to repoelement
Added file menu to eAdventure button