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We want to filter out when suggestions *don't* match in terms of
beginning and ending new lines.

Bug introduced in 9495298e and merged in
2c3872b2.

At that point we can't say we're filtering the most voted suggestion.

An Ikiwiki build will break if it finds suggestions ending in a new line
for sources that do not end in a new line or vice-versa. Because of
this, we filter out such "invalid" suggestions when saving suggestions
to the staging repository, before running the Ikiwiki build.

See: tails#17661 (comment 159555)

weblate.formats.base.TranslationUnit.is_obsolete() was removed from
Weblate 3.9 to 3.10 in:

    https://github.com/WeblateOrg/weblate/commit/bf2863c28598a8548aa86bcfadf27e9843da8158

ikiwiki checks if a file has chend by timestamps. In order to reduce the
changed files, we now only touch files that have changed, by use a
atomic write via a rename of a tempoary file.

* Set the repo to work with as argument
* add verbose flag, so we see logging in the console
* rename subprocessOutputToLogger->log_subprocess_output

* Use models.Components instead of Components
* need for explicit import os
* use enumerate, as it a way simply and less error prune

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.