There is a letter on the "use as text button" of CAS style bar. (#3530)
TODO yet: change the letter when the language changes

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29315 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Revert changes of GeoGebraIcon class in my previous (r29315) commit. (#3530) (There were only for debugging reasons.)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29316 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e