fix launch when optional modules are not installed

src/common/gajim.py

@@ -211,7 +211,7 @@ try:
     gi.require_version('GUPnPIgd', '1.0')
     from gi.repository import GUPnPIgd
     gupnp_igd = GUPnPIgd.SimpleIgd()
-except ImportError:
+except ValueError:
     HAVE_UPNP_IGD = False
 
 HAVE_PYCURL = True

src/common/passwords.py

@@ -258,7 +258,7 @@ def get_storage():
                 gir = __import__('gi.repository', globals(), locals(),
                     ['Secret'], 0)
                 Secret = gir.Secret
-            except (ImportError, AttributeError):
+            except (ValueError, AttributeError):
                 global GnomeKeyring
                 try:
                     gir = __import__('gi.repository', globals(), locals(),

src/gajim.py

@@ -134,11 +134,11 @@ import logging
 # gajim.gui or gajim.gtk more appropriate ?
 log = logging.getLogger('gajim.gajim')
 
-#import gi
-#gi.require_version('Gtk', '3.0')
-#gi.require_version('Gdk', '2.0')
-#gi.require_version('GObject', '2.0')
-#gi.require_version('Pango', '1.0')
+import gi
+gi.require_version('Gtk', '3.0')
+gi.require_version('Gdk', '3.0')
+gi.require_version('GObject', '2.0')
+gi.require_version('Pango', '1.0')
 
 import getopt
 from common import i18n

src/notify.py

@@ -50,7 +50,7 @@ try:
     gi.require_version('Notify', '0.7')
     from gi.repository import Notify
     Notify.init('Gajim Notification')
-except ImportError:
+except ValueError:
     USER_HAS_PYNOTIFY = False
 
 def get_show_in_roster(event, account, contact, session=None):