Fixed a but with the initial scene widget in ProjectScreen.
Also added ChangeView action to play button.
Fixed a bug with the color in the SamplePanel text field that would cause the skin style to change color.
Added functionality to NavigationPanel launchGameButton.
Fixed initial scene button in SceneEdition.
Small fix in HiddenPanel#hit method.
Small improvement in TweenTrack#clean() method.
TweenEditionPanel and Dialog are now displayed on top of the keyboard.
Fixed a bug with the initialization of the TweenEdition widget that would cause the widget not to get cleared sometimes.
Merge pull request #612 from RotaruDan/initialSceneWidgetFix

Fixed a bug with the initial scene widget in ProjectScreen.
Merge pull request #613 from RotaruDan/samplePanelTextFieldColorFix

Fixed a bug with the color in the SamplePanel text field that would caus...
Merge pull request #617 from RotaruDan/tweenEditionWidgetFixes

Tween edition widget fixes
Merge pull request #616 from RotaruDan/hiddenPanelHitFix

Small fix in HiddenPanel#hit method.
Merge pull request #615 from RotaruDan/initialSceneButtonFix

Fixed initial scene button in SceneEdition.
Merge pull request #614 from RotaruDan/navigationPanelPlayFunctionality

Added functionality to NavigationPanel launchGameButton.