PEP8 cleanup: fix number of blank lines

Caught by pep8.

Reviewed-by: James Cameron <quozl@laptop.org>
Acked-by: Simon Schampijer <simon@laptop.org>
CC: Aleksey Lim <alsroot@member.fsf.org>

src/sugar/presence/activity.py

@@ -463,11 +463,13 @@ class Activity(gobject.GObject):
         _logger.debug('%r: leaving', self)
         self.telepathy_text_chan.Close()
 
+
 class _BaseCommand(gobject.GObject):
     __gsignals__ = {
         'finished': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                      ([object])),
     }
+
     def __init__(self):
         gobject.GObject.__init__(self)
 
@@ -532,6 +534,7 @@ class _ShareCommand(_BaseCommand):
         self._finished = True
         self.emit('finished', error)
 
+
 class _JoinCommand(_BaseCommand):
     def __init__(self, connection, room_handle):
         _BaseCommand.__init__(self)

src/sugar/presence/buddy.py

@@ -144,6 +144,7 @@ class BaseBuddy(gobject.GObject):
 
 class Buddy(BaseBuddy):
     __gtype_name__ = 'PresenceBuddy'
+
     def __init__(self, account_path, contact_id):
         _logger.debug('Buddy.__init__')
         BaseBuddy.__init__(self)

src/sugar/presence/connectionmanager.py

@@ -31,12 +31,14 @@ from telepathy.constants import CONNECTION_STATUS_CONNECTED
 ACCOUNT_MANAGER_SERVICE = 'org.freedesktop.Telepathy.AccountManager'
 ACCOUNT_MANAGER_PATH = '/org/freedesktop/Telepathy/AccountManager'
 
+
 class Connection(object):
     def __init__(self, account_path, connection):
         self.account_path = account_path
         self.connection = connection
         self.connected = False
 
+
 class ConnectionManager(object):
     """Track available telepathy connections"""
 
@@ -108,8 +110,8 @@ class ConnectionManager(object):
                 return account_path
         return None
 
-_connection_manager = None
 
+_connection_manager = None
 def get_connection_manager():
     global _connection_manager
     if not _connection_manager:

src/sugar/presence/presenceservice.py

@@ -37,6 +37,7 @@ from telepathy.interfaces import ACCOUNT, \
                                  CONNECTION
 from telepathy.constants import HANDLE_TYPE_CONTACT
 
+
 _logger = logging.getLogger('sugar.presence.presenceservice')
 
 ACCOUNT_MANAGER_SERVICE = 'org.freedesktop.Telepathy.AccountManager'
@@ -44,6 +45,7 @@ ACCOUNT_MANAGER_PATH = '/org/freedesktop/Telepathy/AccountManager'
 
 CONN_INTERFACE_ACTIVITY_PROPERTIES = 'org.laptop.Telepathy.ActivityProperties'
 
+
 class PresenceService(gobject.GObject):
     """Provides simplified access to the Telepathy framework to activities"""
     __gsignals__ = {