4.9.185.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27361 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Remove debug messages

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27362 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
GeoGebraCASIntegrationTest:

Working on the tests testing the examples from the article
"GeoGebraCAS - Vom symbolischen Notizblock zur dynamischen CAS Ansicht" published in "CAS Rundbrief".

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27363 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] add new syntax tangent(equation,point on curve)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27364 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e