[FIX] mass_editing: Remove translations on translatable fields removal (#846)

Fixing error when removing value for fields being translatable, as their translations were not removed.

mass_editing/wizard/mass_editing_wizard.py

@@ -200,6 +200,8 @@ class MassEditingWizard(orm.TransientModel):
     def create(self, cr, uid, vals, context=None):
         if context.get('active_model') and context.get('active_ids'):
             model_obj = self.pool.get(context.get('active_model'))
+            model_field_obj = self.pool.get('ir.model.fields')
+            translation_obj = self.pool.get('ir.translation')
             dict = {}
             for key, val in vals.items():
                 if key.startswith('selection__'):
@@ -208,6 +210,23 @@ class MassEditingWizard(orm.TransientModel):
                         dict.update({split_key: vals.get(split_key, False)})
                     elif val == 'remove':
                         dict.update({split_key: False})
+                        # If field to remove is translatable,
+                        # its translations have to be removed
+                        model_field_id = model_field_obj.search(cr, uid, [
+                            ('model', '=', context.get('active_model')),
+                            ('name', '=', split_key)
+                        ])
+                        if model_field_id and model_field_obj.browse(
+                                cr, uid, model_field_id,
+                                context=context).translate:
+                            translation_ids = translation_obj.search(cr, uid, [
+                                ('res_id', 'in', context.get('active_ids')),
+                                ('type', '=', 'model'),
+                                ('name', '=', u"{0},{1}".format(
+                                    context.get('active_model'), split_key))])
+                            translation_obj.unlink(cr, uid, translation_ids,
+                                                   context=context)
+
                     elif val == 'remove_m2m':
                         dict.update({split_key: [
                             (3, id) for id in vals.get(