#3528 properties error

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27535 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* Angle interval default applies only for angle tool (lines, vector, vectors)
* static method in Angle to create an Angle and set the interval as default

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27536 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Mongolian: Navchaa Tserendorj

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27539 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix #3517

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27540 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#2153 spreadsheet trace on file load

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27541 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e