Blending issue on object set to active/disabled.

[OscarPeredo]

When the object is set to disabled, and then re-enabled the blending values set on the editor seem to get lost. (This happens when testing on iOS, doesn't seem to happen on the preview view itself)

[heiko-holz]

Same for android.
See the attached file to see the difference between regular particle effect and after the game object has been disabled and enabled.
Before: www.whysoseriousgames.de/PDUnity/PDUnity_before.png
After: www.whysoseriousgames.de/PDUnity/PDUnity_after.png

[heiko-holz]

Fixed it by adding two lines about currentBlendSource and currentBlendDestiation to the method

  void ClearDown()
        {
            // Reset current blend modes.
            currentBlendDestination = -1;
            currentBlendSource = -1;

            this.emitterConfig = null;
            this.initialized = false;
        }