Better fix for #102

Rationale:
-other backends don't require internet access
-displaying last unread count w/o connection seems reasonable
-however: error handling in get_connection() is quite wildcardy,
which is no good. Should be fixed asap.

Introducing a core exception for directly displaying errors may be a good idea at this point for next.

i3pystatus/mail/__init__.py

@@ -41,7 +41,6 @@ class Mail(IntervalModule):
         for backend in self.backends:
             pass
 
-    @require(internet)
     def run(self):
         unread = sum(map(lambda backend: backend.unread, self.backends))
 

i3pystatus/mail/imap.py

@@ -26,6 +26,7 @@ class IMAP(Backend):
 
     imap_class = imaplib.IMAP4
     connection = None
+    last = 0
 
     def init(self):
         if self.ssl:
@@ -51,9 +52,8 @@ class IMAP(Backend):
     def unread(self):
         conn = self.get_connection()
         if conn:
-            return len(conn.search(None, "UnSeen")[1][0].split())
+            self.last = len(conn.search(None, "UnSeen")[1][0].split())
-        else:
+        return self.last
-            sys.stderr.write("no connection")
 
 
 Backend = IMAP