properties files and related resources automatically updated from ggbtrans

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26221 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
improve animated GIF export: avoid slider values like 14.399999999999968

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26222 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e