export to animated GIF working for EV 3D

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@22769 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Preferences: organize imports on save

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@22770 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e