Correct euclidian visibility (for GeoConicPart3D)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31508 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Dummy idea

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31509 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for #4034

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31510 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4045: these debug messages might help in searching for the solution (as I can only test the bug from remote URL)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31511 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3882 ProbabilityCalculator StatTable events finetuned. Distribution tab works well.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31512 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
3D Quadric can be a region when single point

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31513 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4045: minor refactoring opportunity found in Desktop version too

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31514 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e