Issue583

[mariusbarth]

Hi @crsh,

so this is an attempt at fixing what has been described in issue #583.

• I added a test for row names in expect_apa_results() to protect against future glitches.
• Row names are not added to the results table, anymore.
• The term names are now consistently constructed via sanitize_terms().
• sanitize_terms() now always replaces multiple consecutive underscores with a single underscore.

In addition to what I implemented here, we could consider sanitize_terms() to always remove leading underscores.

[crsh]

Regarding your suggestion on sanitize_terms(), I think this would make sense. If you want to add this to this PR, feel free and also feel free to merge.