force explicit form for FitLine (ie y=mx+b) and ignore default

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@22873 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
properties files and related resources automatically updated from ggbtrans

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@22874 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for error message eg x(7)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@22875 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
remove remaining OpenNI references

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@22876 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e