docs: Improve the documentation of a few methods.

src/main/java/de/eskalon/commons/core/ManagedGame.java

@@ -114,6 +114,15 @@ public ScreenManager<S, T> getScreenManager() {
 		return screenManager;
 	}
 
+	/**
+	 * {@inheritDoc}
+	 * <p>
+	 * Please note that, on Android, data stored in static variables may persist
+	 * past this stage and thus may still be accessible when the application is
+	 * run again. To prevent this, make sure to set all static variables to
+	 * {@code null} upon disposal of the application
+	 * 
+	 */
 	@Override
 	public void dispose() {
 		screenManager.dispose();

src/main/java/de/eskalon/commons/screen/ScreenManager.java

@@ -351,6 +351,7 @@ protected void finalizeTransition(T oldTransition) {
 
 	/**
 	 * @see ManagedScreen#resize(int, int)
+	 * @see ScreenTransition#resize(int, int)
 	 */
 	public void resize(int width, int height) {
 		Preconditions.checkState(initialized,
@@ -401,9 +402,12 @@ public void resume() {
 	}
 
 	/**
-	 * Disposes the screen manager and any screen and transitions pushed, which
-	 * were not yet {@linkplain ManagedScreen#hide() hidden}, regardless of
-	 * whether they already started being rendered.
+	 * Disposes the screen manager as well as any screens and transitions, which
+	 * were pushed but not yet {@linkplain ManagedScreen#hide() hidden},
+	 * regardless of whether they already started being rendered.
+	 * 
+	 * @see ManagedScreen#dispose()
+	 * @see ScreenTransition#dispose()
 	 */
 	@Override
 	public void dispose() {