Add extra splitter expressions and tests for German and Danish.

Also some refactoring to make it a bit easier to add more languages.

tests/text_quotations_test.py

@@ -99,21 +99,21 @@ bla-bla - bla"""
 
 
 def test_pattern_original_message():
-    msg_body = """Test reply
+    languages = (
+            'Original Message', # English
+            'Reply Message',
+            u'Ursprüngliche Nachricht', # German
+            'Antwort Nachricht',
+            'Oprindelig meddelelse', # Danish
+    )
+    msg_body = u"""Test reply
 
------Original Message-----
+-----{}-----
 
 Test"""
 
-    eq_("Test reply", quotations.extract_from_plain(msg_body))
-
-    msg_body = """Test reply
-
- -----Original Message-----
-
-Test"""
-
-    eq_("Test reply", quotations.extract_from_plain(msg_body))
+    for language in  languages:
+        eq_("Test reply", quotations.extract_from_plain(msg_body.format(unicode(language))))
 
 
 def test_reply_after_quotations():
@@ -209,7 +209,7 @@ def test_pattern_date_email_with_unicode():
 
 
 def test_pattern_from_block():
-    msg_body = """Allo! Follow up MIME!
+    english  = """Allo! Follow up MIME!
 
 From: somebody@example.com
 Sent: March-19-11 5:42 PM
@@ -218,7 +218,30 @@ Subject: The manager has commented on your Loop
 
 Blah-blah-blah
 """
-    eq_("Allo! Follow up MIME!", quotations.extract_from_plain(msg_body))
+
+    german  = """Allo! Follow up MIME!
+
+Von: somebody@example.com
+Gesendet: Dienstag, 25. November 2014 14:59
+An: Somebody
+Betreff: The manager has commented on your Loop
+
+Blah-blah-blah
+"""
+
+    danish  = """Allo! Follow up MIME!
+
+Fra: somebody@example.com
+Sendt: 19. march 2011 12:10
+Til: Somebody
+Emne: The manager has commented on your Loop
+
+
+Blah-blah-blah
+"""
+
+    for language in (english, german, danish):
+        eq_("Allo! Follow up MIME!", quotations.extract_from_plain(language))
 
 
 def test_quotation_marker_false_positive():