I'm a fedora user since fed 18, and work into translation and bug reports.
- 2016-07 : created a project about the translation of AppData files (fr) : https://jibecfed.fedorapeople.org/l10n/appdata-fr/
- 2015-12-05 : French conference about how translation work in Fedora (document is available for download) at https://fedoraproject.org/wiki/Rencontres_Fedora_23_%C3%A0_Paris
I created a statistic script to have numbers about Fedora translation in Fedora : you can get it from there : https://github.com/Jibec/fedora-translation-statistics
You can donwload one example file : File:Translation statistics-2015-11-22.ods
AppData / AppStream Statistics
I created a statistic script to have numbers about Fedora translation of RPM available in Fedora, based on AppData/AppStream files.
The script is available : https://github.com/Jibec/fedora-translation-statistics You need to download "Fedora-23.xml" from https://alt.fedoraproject.org/pub/alt/screenshots/f23/
Translation statistics based on 613 packages with AppData (2015-12-06) :