Ability to send emails with empty message body.
Support querying for null values in mongoDB
removed customize it
fixed missing error in design when app does not exist
fixed problem with get_app when app does not exist
Merge pull request #179 from nursix/master

Ability to send emails with empty message body.
Merge branch 'master' of github.com:web2py/web2py
Merge pull request #180 from gi0baro/issue1641

Support querying for null values in mongoDB
Merge branch 'master' of github.com:web2py/web2py
fix issue with scheduler namespace. Thanks @limedrop for spotting this.
Merge pull request #181 from niphlod/issue/scheduler_namespace

fix issue with scheduler namespace. Thanks @limedrop for spotting this.
Merge branch 'master' of github.com:web2py/web2py
support new session logic
Merge pull request #182 from rpedroso/redis-mocktable-callable

redis_session: support new session logic
Merge branch 'master' of github.com:web2py/web2py
fixed typo in globals, thanks Niphlod
added boilerplate to be able to run tests from anywhere. Added test for validate_and_insert too.
Merge pull request #183 from niphlod/issue/tests

added boilerplate to be able to run tests from anywhere
Merge branch 'master' of github.com:web2py/web2py
no more plugins in wizard