Select only partitions.

There are subobjects which do not provide validation state, which can endup in
acquisition of dangerous methods.

master/bt5/vifib_slap/SkinTemplateItem/portal_skins/vifib_slap/Computer_updateFromDict.xml

@@ -85,7 +85,7 @@
 \n
 # Getting existing partitions\n
 existing_partition_dict = {}\n
-for c in context.contentValues():\n
+for c in context.contentValues(portal_type="Computer Partition"):\n
   existing_partition_dict[c.getReference()] = c\n
 \n
 # update computer data\n

master/bt5/vifib_slap/bt/revision

-791
\ No newline at end of file
+792
\ No newline at end of file