debugobsconvert: fix 6f08a8f6bb1d and add proper test
The changeset adding deduplication (6f08a8f6bb1d) was super buggy and dropped
all obsmarkers in the repo. We update the test to check this case and fix the
deduplication.
all: tutorials/tutorial.rst static/logo-evolve.ico
sphinx-build . ../html/
tutorials/tutorial.rst: tutorials/tutorial.t
python test2rst.py tutorials/
static/logo-evolve.ico: static/logo-evolve.svg
convert -resize 36x36 static/logo-evolve.svg static/logo-evolve.ico