play-button is in the other buttons' row (#3246)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25962 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Play button improvements (#3246)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25963 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e