Avoid default point size, line thickness, angle size < 1

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37340 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Increase current default sizes when ctrl+2

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37341 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e