Revert "Revert "Fixed bug: Unable to load saved sketch with grouped objects""

This reverts commit 5c49f7b5e7f80c688cacae4f249cfb545d2297c8.
Revert d5b8260..b6cf544

This rolls back to commit d5b8260a633c001582caee53cae95d08356c1d91.
When moving a keyframe left, "pushing" another keyframe should not move the current time marker to that keyframe.     - autosnap needs to stay on the selected tick mark.
Fixed bug: color of selected menu does not stay when exported to IOS platform