Policy manager: added support for service-id in nodejs native interface.
Jira issue: WP-683
Policy manager: extract service id from rpc call.
Jira issue: WP-683.
Handling of service unregistered/registered at PZH web server

 Service are cached for the service registered/unregistered at PZH.
 PZP is restarted those services are not loaded.

Jira Issue: WP-647
Fixed sensor/iot register service defects + fix of command signatures

Jira-issue: WP-712

There was some defects in iot driver design which meant that if
a driver tried to register directly in the init function this
would fail. The following had to be done:

- Loading and initializing drivers is done in 2 separate steps since
a driver can contain both sensor and/or actuators and both listeners
has to be initialized.

- Driverinterface is created and then as a separate function call
the module is connected. otherwise the sensor/actuator module haven't
stored the driverinterface reference when registrations are called
back.

Also, some changes has been made to some of the driverinterface
command signatures to better support the needed use-cases:

- An error callback has been added to driverinterface commands
so that drivers can report errors back.

- The hard-coded eventmode parameter sent in 'start' command data
has been removed. In accordance with the Sensor API this is sent
in configuration data instead.
Contacts Refactoring
Jira issue: WP-674
Contacts Refactoring
Jira issue: WP-674
Contacts Refactoring (code adjustment)
Jira issue: WP-674
Merge branch 'master' of https://github.com/webinos/Webinos-Platform into WP-674
Contacts Refactoring (code re-adjustment)
Jira issue: WP-674
Certificate wrapper code: Remove headers that are not recognized by Windows

Jira Issue: WP-716
Merge pull request #438 from ziransun/WP-716

Certificate wrapper code: Remove headers that are not recognized by Wind...
Merge pull request #435 from pmorau/WP-712

Fixed sensor/iot register service defects + fix of command signatures
Merge pull request #437 from michelemorello/WP-674

Wp 674
Merge pull request #434 from habibvirji/WP-647-store-services

Handling of service unregistered/registered at PZH web server
Merge pull request #433 from steverc/WP-683-service-based-policy

Policy manager: service id support