Apply nametrans to all Foldertypes

getvisiblename() was only defined on IMAP(derived) foldertypes, but we
want it on eg. Maildirs too, so we define it centrally in Folder.Base.py
rather than only in folder.IMAP.py.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

offlineimap/folder/Base.py

@@ -38,6 +38,7 @@ class BaseFolder(object):
         self.ui = getglobalui()
         self.name = name
         self.repository = repository
+        self.visiblename = repository.nametrans(name)
         self.config = repository.getconfig()
 
     def getname(self):
@@ -69,7 +70,8 @@ class BaseFolder(object):
         return 1
 
     def getvisiblename(self):
-        return self.name
+        """The nametrans-transposed name of the folder's name"""
+        return self.visiblename
 
     def getrepository(self):
         """Returns the repository object that this folder is within."""

offlineimap/folder/IMAP.py

@@ -40,7 +40,6 @@ class IMAPFolder(BaseFolder):
         self.sep = imapserver.delim
         self.imapserver = imapserver
         self.messagelist = None
-        self.visiblename = repository.nametrans(name)
         self.randomgenerator = random.Random()
         #self.ui is set in BaseFolder
 
@@ -67,9 +66,6 @@ class IMAPFolder(BaseFolder):
     def getcopyinstancelimit(self):
         return 'MSGCOPY_' + self.repository.getname()
 
-    def getvisiblename(self):
-        return self.visiblename
-
     def getuidvalidity(self):
         imapobj = self.imapserver.acquireconnection()
         try: