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 DataHandlingPolicy, DataHandlingPreferences and ProvisionalActions references in PolicySet, Policy and Rule

Jira-issue: WP-563
Removed DataHandlingPolicy. In policy.xml there are DataHandlingPreferences only. DataHandlingPolicy are in widget manifest.

Jira-issue: WP-563
Added missing include

Jira-issue: WP-563
Bugfixing about DataHandlingPreferences and ProvisionalActions

Jira-issue: WP-563
Initial support to data handling preferences evaluation in PolicySet, Policy and Rule tags.

Jira-issue: WP-563
Added evaluation in ProvisionalActions and sub-tags.

Jira-issue: WP-563
Make files modified to compile new files.

Jira-issue: WP-563
Bugfixing

Jira-issue: WP-563
Added a first draft of authorization evaluation.

Jira-issue: WP-563
Removed unused files

Jira-issue: WP-563
Removed DeveloperProviderDescription tag (because it is in app manifest only)

Jira-issue: WP-563
Add W3C dig. sig. test suite support

Integrates running the W3C digital signature test suite from the widget runtime.

Jira issue: wp-334