Ignore missing default translations in translation coverage

[timobrembeck]

Motivation

When the translations in the default language are either "in review" or "draft", the translation status is considered "missing".
This is confusing in the translation coverage view, since we only want to know how many translations need to be translated by professional translators, not how many pages need content revisions.

Proposed Solution

Ignore missing translations in the default language in the translation coverage view.
These translations should also be ignored in all other languages and not counted as missing/outdated words.

Alternatives

Additional Context

[svenseeberg]

I think changing the calculation for the default language would be more difficult and confusing than other solutions. I'd prefer one of the following solutions:

• Drop the source language of a region completely from the view. It seems reasonable for users to not consider the source language a "translation" and therefore there is no expectation that the language would appear in the statistics.
• Simply explain what is going on and what the graph is showing.

[dkehne]

Please speak to UI/UX to solve it useful. I like the idea more of Timo, than dropping of the source language or put in any more text.
it should be self-explaining...

[svenseeberg]

it should be self-explaining...

It always should be. It never is, and we need to discuss how to get there.