Try to fix NPE

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35783 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
CAS stylings

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35784 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
IS_PRE_RELEASE = false

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35785 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
update translators

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35786 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Refactoring the Tube availability check

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35787 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Simplified NetworkOperation

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35788 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
testing - fix for missing 3D Tool icons in applets

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35789 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e