using and exporting source and explanation

src/export.py

@@ -103,8 +103,13 @@ def export_translation(doc, translation):
     
     actual_t = doc.createElement("translation")
     actual_t.textContent = translation.translation
+    actual_t.setAttribute("source", translation.source)
     translation_xml.appendChild(actual_t)
     
+    explanation = doc.createElement("explanation")
+    explanation.textContent = translation.explanation
+    translation_xml.appendChild(explanation)
+    
     tags = doc.createElement("tagsContainer")
     translation_xml.appendChild(tags)
     

src/model/translation.py

@@ -10,6 +10,10 @@ class Translation:
     def __init__(self, translation_xml):
         translation = translation_xml.querySelector("translation")
         self.translation = translation.textContent if translation else ""
+        self.source = translation.getAttribute("source") or ""
+        
+        explanation = translation_xml.querySelector("explanation")
+        self.explanation = explanation.textContent if explanation else ""
         
         self.tags = {}
         for tag_xml in translation_xml.querySelectorAll("tagsContainer tag"):