Change import/export for translation: source&targetLang

src/export.py

@@ -129,6 +129,8 @@ def export_translation(doc, translation):
     
     actual_t = doc.createElement("translation")
     actual_t.textContent = translation.translation
+    actual_t.setAttribute("targetLang", translation.targetLang)
+    
     if translation.source:
         actual_t.setAttribute("source", translation.source)
     translation_xml.appendChild(actual_t)

src/model/translation.py

@@ -5,8 +5,9 @@ from model.editable import Editable
 class Translation(Editable):
     def __init__(self, translation_xml):
         translation = translation_xml.querySelector("translation")
-        self.translation = translation.textContent if translation else ""
-        self.source = translation.getAttribute("source") if translation else ""
+        self.translation = translation.textContent
+        self.source = translation.getAttribute("source") if translation.hasAttribute("source") else ""
+        self.targetLang = translation.getAttribute("targetLang")  if translation.hasAttribute("targetLang") else ""
         
         explanation = translation_xml.querySelector("explanation")
         self.explanation = explanation.textContent if explanation else ""