In match_#.html, select "exact" by default instead of "structure"

[dmalan]

Based on experience, we always started with "exact" when reviewing.

[Jelleas]

compare50 is by design extensible in its comparison methods, and it seems wrong to prioritize one method over another. The current logic is that the comparison method that creates the ranking, is the first in the list of views.

But I think adressing #66 would solve this issue too.