[2.0.0-beta.1] Can't ignore other .json files

[Signe93]

While importing existing translation files, it would be nice to select which files to ignore.
In my project, I have localisation files (en.json, de.json etc.) and some other json files used for translation, but following other strutcture and basically there is no need to edit them, because they won't change.
So, while I'm opening my files, thesee additional files are also loaded. It would be nice, if I could just ignore the files i don't need to edit.

Keep up the good work!