Ikiwiki won't render strings, that are marked as fuzzy. So we unfuzz the
strings, so the sugestions get rendered in the staging website.

The only needed change is that models.SubProject has renamed to
models.Component.

If one translation unit has multiple suggestion, we want to select the
one that has the most up-votes. As second sorting parameter, the
timestamp is used.

python sorted() function is guaranteed to be stable.

Accordingly, I'm removing the -x flag passed to "git clean", otherwise we would
delete the .ikiwiki/ directory, which contains the information ikiwiki needs
to refresh. This has other side effects, such as leaving POT files around;
if that's a problem, we may need to delete them (without using "git clean")
in save-suggestions.py.