Documentation. Tracing, Tips and Calligraphy tutorials update (partially translated).
Documentation. Updating all tutorials (except advanced and shapes). New Greek translation of tracing.
Dutch tutorials: typos and update
Tutorials. Global tutorials update (see Bug #169020, Bug #672423 and Bug #438307).
Dutch tracing tutorial and translation update
Tutorials. Dutch tracing tutorial fix (missing potrace-nl.png file).
Tutorials. New Dutch Tracing tutorial translation.