Policy Management API Draft implementation with two basic methods: getPolicy, setPolicy

Jira issue: WP-932
Policy Management API: Added implementation made by glatorre in webinos/core/wrt/lib/webinos.policymanagement.js

Jira-issue: WP-932
Added reference to default policies' folder

Jira issue: WP-932
Policy Management API files moved to create the modularised version

Jira issue: WP-932
Policy Management API
Added missing file for the modularised version
In order to load this API the following line has to be added in the file
wrt/webinos.servicedisco.js inside the webinos-api-serviceDiscovery module

 if (typeof PolicyManagementModule !== 'undefined')
     typeMap['http://webinos.org/core/policymanagement'] =
     PolicyManagementModule;

Jira issue: WP-932
Resolved bug on policy save

Jira issue: WP-932
Fixed getPolicy method
Merge pull request #1 from glatorre/master

Fixed getPolicy method, Edited index page
Fixed updateRule
Merge pull request #2 from glatorre/master

Fixed updateRule method
Jira issue: WP-932
Various fix
Merge pull request #3 from Valerio88/master

Various Fix
Removed tests on index.html page

Jira issue: WP-932
Fixed all principal bugs
Changed updateAttributes to updateAttribute and toJSONString() in toJSONObject()
Added API documentation
Merge pull request #4 from Valerio88/master

Fixed some bugs. Updated methods addSubject, updateAttribut and toJSONObject for policy and policyset objects
Merge pull request #5 from glatorre/master

Added API's documentation

Jira issue: WP-932
Fixed format for the first tow methods

Jira issue: WP-932
Added method to test enforcement results

Jira issue: WP-932