Fix #23 let's truncate the tweet

wantzel.py

@@ -561,9 +561,17 @@ class Wantzel(object):
             # lesser than future
             if today < entry.published_parsed < now:
                 if self.last_entry_published < entry.published_parsed:
+                    # Let's see if we can truncate the lenght of the tweet
+                    # We have 5 chars for the language, so max-length is 135
+                    title = entry.title.encode("utf-8")
+                    link = entry.link.encode("utf-8")
+                    if len(title) + len(link) > 135:
+                        # What is the number of chars we need to remove
+                        excess = len(title) + len(link) - 135
+                        title = ''.join([title[:-(excess + 4)], u' ...'])
                     tweet(messages["tweet_rp_%s" % language] % (
-                        entry.title.encode("utf-8"),
-                        entry.link.encode("utf-8")
+                        title,
+                        link
                     ))
                     Utils.debug(entry.published_parsed)
                     Utils.debug(entry.title)