Improved ImportEntity action to work with frames.
Renamed ImportEntity to ImportEntityResources action.
Renamed ImportEntityTest to ImportEntityResourcesTest.
Also fixed it after recent changes.
Improved RepositoryManager to work with Frames component and nested children.
Added Image Editor to Android external edition tools.
Fixed ChangeInitialScene action target.
Merge pull request #597 from RotaruDan/externalEditionTool

Added Image Editor to Android external edition tools.
Changed DeleteSceneAction to use RemoveRootEntityCommand.
Merge pull request #599 from RotaruDan/initialSceneFixes

Fixed ChangeInitialScene action target.
Merge pull request #596 from RotaruDan/repoManagerImprovements

RepositoryManager improvements
Fixed a bug with FramesComponent that wouldn't reset the frames loop correctly sometimes.
Pictures now have thumbnails displayed correctly.
Also fixed a small bug with the EditionContext after taking a picture.
Merge pull request #602 from RotaruDan/framesComponentFix

Fixed a bug with FramesComponent that wouldn't reset the frames loop cor...
Now MeshHelper also saves thumbnails.
Now painted elements display thumbnails correctly.
Merge pull request #600 from RotaruDan/deleteSceneFix

Changed DeleteSceneAction to use RemoveRootEntityCommand.
Added PlayScreen.
Still needs to be correctly centered and not to show the debug rendering.
SampleTextPanel now hides on screen keyboard after adding a text.
Also now aded texts are inserted as children of the edition context.
Fixed a bug with the EditionContext not being restored after going to SceneEdition from ElementEdition by pressing Android's back button.
Merge pull request #603 from RotaruDan/pictureFixes

Pictures now have thumbnails displayed correctly.
Fixed a bug that would cause the SceneGallery no to get updated somethines.
Also using NewScene action instead of AddScene action.