Bump version in setup.py
Remove unnecessary chmod commands from setup.sh.

Summary:
Commit e540d08add1161e301f563b12cc8f182a2fed0b0 removes `cp` commands,
which are followed by `chmod 644` commands (introduced in
a84e8be0c84b62ad099dd0ba38a352a9795b103d as a first fix to non-standard
umasks), in favor off `install -m0644` commands to copy configuration
files from the host to the guest. This makes `chmod 644` commands
useless.

Test Plan:
Create a brand new virtual machine starting with vagrant up and make sure
/etc/inboxapp/config.json and /etc/inboxapp/secrets.yml are world-readable.

Reviewers: dlitz

Reviewed By: dlitz

Differential Revision: https://review.inboxapp.com/D663
Add Redis its dependencies and configuration.

Summary:
Modify setup.sh to install and configure redis. setup.sh downloads
redis-2.8.17, which is the same available through AWS (Debian/Ubuntu's version
is far too old), compiles and installs it (through stow), configures it using
the utils/install_server.sh redis.io distributes.

Add Redis configuration parameters to etc/config-dev.json (nothing for
etc/config-test.json yet).

Test Plan:
Bring up a new virtual machine and make sure Redis is running by connecting
through redis-cli. Fire up the Python console and run the following piece of
code to make sure the redis pip package works correctly:

```
from redis import StrictRedis

client = StrictRedis(host='localhost')
print client.ping()
```

Reviewers: dlitz, kav-ya

Reviewed By: kav-ya

Subscribers: emfree

Differential Revision: https://review.inboxapp.com/D730
Fix DateTime field parse error.
Support for nested objects, basic nested queries.
Note: does not support cross parent/child nested relations.