Stats page has duplicate language

[TLaborde]

What Went Wrong?

The state page contains a graph with language split, but some language are represented multiple time. Moreover, the format of the source field is sometimes ISO639 (plus country code?) so we can get a weird mix

How Can We Reproduce This?

Put several book with the same language and it may happens.

What Should Have Happened?

group at least by matching language if it's an exact match, maybe also convert ISO code to language.

Screenshots or Error Messages (Optional)

Any Ideas on How to Fix This? (Optional)

haven't looked into it yet.

Your Setup

Grimmory 2.3.0 on docker

Before Submitting

• I've searched existing issues and confirmed this bug hasn't been reported yet