Fix some random indentation errors and missing imports.

src/config.py

@@ -1333,8 +1333,6 @@ class AccountsWindow:
 		st = gajim.config.get('mergeaccounts')
 		self.xml.get_widget('merge_checkbutton').set_active(st)
 
-		import os
-
 		self.avahi_available = True
 		try:
 			import avahi

src/dialogs.py

@@ -1898,7 +1898,7 @@ class SingleMessageWindow:
 					spell1.set_language(lang)
 					spell2.set_language(lang)
 			except gobject.GError, msg:
-				dialogs.AspellDictError(lang)
+				self.AspellDictError(lang)
 
 		self.prepare_widgets_for(self.action)
 

src/search_window.py

@@ -20,7 +20,7 @@
 import gobject
 import gtk
 
-from common import xmpp, gajim, dataforms
+from common import gajim, dataforms
 
 import gtkgui_helpers
 import dialogs

src/tooltips.py

@@ -30,7 +30,6 @@ import gtkgui_helpers
 
 from common import gajim
 from common import helpers
-from common import i18n
 
 class BaseTooltip:
 	''' Base Tooltip class;