Ticket #3874: adding two methods to StringUtil that may be useful for this ticket

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34959 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3874: adding one method to the Script class that may be useful for this ticket (note that Script.text is not final any more, I don't know whether it is a problem).

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34960 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Test update

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34961 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
New Relation Tool: OK button added (desktop)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34962 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3874: In case of GgbScript, this will probably work, but it came to my mind that for JavaScript, it is probably still buggy

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34963 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e