* src/GrampsDbBase.py: remove thumbnailing routines, add

id creation. Removes gtk and Utils dependencies, making the
database routines independent of gtk and gnome.
* src/ImgManip.py: add thumbnailing routines.
* various: thumbnailing changes and pychecker fixes


svn: r3888

src/Utils.py

@@ -69,10 +69,9 @@ def history_broken():
 # force_unicode
 #
 #-------------------------------------------------------------------------
-_t = type(u'')
 
 def force_unicode(n):
-    if type(n) != _t:
+    if type(n) != unicode:
         return (unicode(n).lower(),unicode(n))
     else:
         return (n.lower(),n)