better english and typo

src/common/i18n.py

@@ -37,7 +37,7 @@
 # according to the environment variables
 locale.setlocale(locale.LC_ALL, '')
 
-## Add LANG to os.environ ##
+## Add, if needed, a value in LANG environmental variable ##
 # get LANG, fallback to ''; LANG can be 'en_US:el_GR.UTF-8:fr_FR'
 lang = os.environ.get('LANG', '')
 default_loc = locale.getdefaultlocale()[0] # en_US, fr_FR, el_GR etc..

src/vcard.py

@@ -138,7 +138,7 @@ def on_close_button_clicked(self, widget):
 		# update contact.name if it's not ''
 		name_entry = self.xml.get_widget('nickname_entry')
 		if not name_entry:
-			# This can happen when we don't show jabber page. For exemple when we
+			# This can happen when we don't show jabber page. For example when we
 			# show the vcard of a contact that request our subscription
 			self.window.destroy()
 			return