fix for the 'nsname' KeyError induced due to the merging of namespace branch
mksupport: create required package __init__.py files
merged default into gae branch
Fixes the sub-items related issues, 351 -Nesting sub-items created problem (TypeError: can only concatenate list (not unicode) to list), 335 - Subitems links were not ...
Fixes 346 (Item Rename allows new name to reuse existing name)