tidy code

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35144 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
use EVNO_GENERAL for views for plane

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35145 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* algo locus : check z
* Kernel : use xmin, etc. arrays

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35146 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e