Update translations

[nicosomb]

ping @wallabag/translators
We updated our languages files, some keys are not translated.

Please have a look to these files and update them if necessary.

Don't forget to read our documentation about translation http://doc.wallabag.org/en/v2/developer/translate.html

We planned to release wallabag v2 stable on 3rd April, so it could be a good thing if translations are complete.

[j0k3r]

Untranslated string are commented in each file.
The english version is defined instead but you'll have to remove the "#" at the beginning of the line.

[j0k3r]

• da
• de
• es
• fa
• pl
• ro
• tr