handle datetime without seconds like 2013-12-03 13:14
support Google AppEngine ndb in hujson2
rebase/merge
added tests for timezone removal
Merge branch 'master' of https://github.com/hudora/huTools

Conflicts:
	huTools/calendar/formats.py
	huTools/hujson2.py
Merge commit 'd1e629e'

Conflicts:
	huTools/calendar/formats.py