Added DataHandlingPolicy and DataHandlingPreferences tags.

Jira-issue: WP-563
Data Handling header files fixed

Jira-issue: WP-563
Added AuthorizationsSet and ObligationsSet tags

Jira-issue: WP-563
Added AuthzUseForPurpose tag

Jira-issue: WP-563
Bugfixing in DataHandling tags

Jira-issue: WP-563
Partial support to Obligation tag

Jira-issue: WP-563
Added ProvisionalActions tag

Jira-issue: WP-563
Added partial support to ProvisionalAction tag

Jira-issue: WP-563
Added ObligationsSet evaluation

Jira-issue: WP-586
Move of policy manager to separate repository