Merge branch '565_fix_environemnt_language_admin' into 'django3_migration'

Remove the extra forms for environment language handling

See merge request !375

beat/web/backend/admin.py

@@ -61,6 +61,7 @@ class EnvironmentModelForm(forms.ModelForm):
 
 class EnvironmentLanguageInline(admin.TabularInline):
     model = EnvironmentLanguageModel
+    extra = 0
 
 
 class Environment(admin.ModelAdmin):