needed for example for wendelin.core arrays + connections

@alain.takoudjou , @rafael  if no objections can you please accept & merge it?

/reviewed-on nexedi/slapos.core!36

slapos/slap/slap.py slap.initializeConnection: Cache master node's Hateoas URL and do not ask many times. Communication to master node is expensive.

slapos/slap/slap.py: Fix ComputerPartition.setConnectionDict. Declare connection_parameter_hash explicitly, UnboundLocalError may occur.

rename checkPromises to checkPromiseList, and move the method to grid/utils so it can be imported by monitor to check promises.


`raise_on_failure` will be used to check all promises without raise. All promises result will be returned.

`profile` True/False will log promise execution time.

/reviewed-on nexedi/slapos.core!35

The API Tool was removed

  Include SlapOS JS WebSite (based on ERP5JS implementation)
  Added slaposjs_view actions (WIP)
  Included actions for "view" (used for get) on the required portal
types.
  Refactor Forms and action to use Javascript based views
  Convert Computer Network forms into Javascript
  Convert Software/Slave Instance Froms into Javascript.
  Refactor Hosting Subscription management into Javascript only.
  Implement Computer [Module] mangement
  Gadgets to include tickets related to the context (Computer and Hosting Subscription)
  Make frontpage not rely on ERP5Forms.
  Workaround the workaround by dropping bad entries added from fields.
     Certain field are very bad and introduced compatibility with ERP5 and those are
     not directly compatible with jio_put. So this commit workaround  for now certain
     cases until the fields are fixed.

  Set slap_controller as default view for the new Interface
  Handle lack of data when define the state of the computer.
  Include System Preference Form

  This authentication code will be provided by generic ERP5 code now.
  Add google and facebook oauth2 dependencies.
  Use correct name for RSS style on skin later.

On render/jio interface, validate objects or create initial subojects are too expensive, so
slapos_erp5_interaction_workflow is been introduced to auto set properties after an object
is defined as Site (Organisation) or Support Request created from the User.

Automatically create an assignment when user creates a Project.

  Remove old rest API as it will be replaced by hal implementation
  slapos_web: portal_slapos_rest_api is deprecated, remove related JavaScript.

The services where unified.

ansible1.9.noarch is not available on CentOS, so just install standard
ansible. It is >=2.x, but erp5-standalone.yml playbook works with it.

/reviewed-on nexedi/slapos.core!33

   Since the introduction of UserId every person document has reference set, so this condition never matches.

  The API require a valid user with login

  Only invoke the script on configurator tests, to prevent some properties (like memcache information),
  be overwriten by the initialisation.

  This test aims to test the constraints

Reimplement promise alarm as constraint.