Initiall tests for Snapshot and Entity

Major changes
  Rename pymonitor, add dependency and simplify
  Save all information using sqllite
  Record information from all processes individually
  Implement Snapshot for Computer and Systems information
  General Clean up

This reverts commit 280232a7.

Else it always return 0: http://git.openstack.org/cgit/openstack/cliff/tree/cliff/command.py?id=1.4#n39

This prevent getting a document indexed multiple time.

This allow bootstraping of the ERP5 site.

Return jIO urn to directly use jIO instead of custom ajax calls.

For example, it used to replace foo_key_file fields as well whereas only
key_file should have been replaced.

Prepare retrieval of ERP5Form with a simple jio.get(_id=form_key)

  This new command aims to be used on linux start up. It wait until
  network is up (ipv4 and ipv6), them it runs slapos node format and bang.

  It removes the .timestamp on all partitions, in order to force re-run.

This is just a proof of concept without genericity.

These are just optional dependencies to enhance slap console, which works fine
with the default python interpreter, so they should not be required.