Fixed #11
Fixed #12
Updated changelog with references to latest fixed issues

- Porting to Tomcat 8/Servlet 3.1, Java 8, Ubuntu 16.04 LTS
- Replaced ubuntu package dependency on JDK with JRE
- JSON support (added dependency on Jettison):
	- New config file for XML namespace to JSON prefix mappings
- Update license headers for new year 2017

- Parent project: 3.4.0 -> 4.1.1: 
    - Apache CXF 3.1.0 -> 3.1.9
    - Java Servlet API 3.0.1 -> 3.1.0
- authzforce-ce-core: 5.0.2 -> 6.1.0:
	- Saxon-HE 9.7.0-11 -> 9.7.0-14
	- Spring 3.2.2 -> 4.3.5,
- authzforce-ce-pap-dao-flat-file: 6.1.0 -> 7.0.0
- authzforce-ce-core-pdp-api dependency version: 8.0.0 -> 8.2.0
- Added unit test expecting 400 Bad Request when pushing policy with
invalid function ID in Apply statement

- Lower log level of BadRequestException from warn to info
- Updated changelog with latest changes
- Updated README for upgrades adding instruction for backup

Removed SNAPSHOT dependencies in pom
Updated changelog with latest changes

  -> changed fastinfoset-aware wadl location 	
- Updated changelog with new feature 'conformance to rest profile of
xacml'
- Added test for pdp link relation according to conformance to rest
profile of xacml 

- Added README.html automatic generation from src/tar/README.md for
tarball distribution
- Updated changelog to prepare release

(no Multi decision profile support) instead of MDP request filter
before, and maxVariableDepth to 10 (instead of 1 before)
- Added fastinfoset dependency, although not yet used (but could be
activated by modifying spring conf in WEB-INF)
- Handle the case in REST API where domain's PDP = null (error state
because of corrupted backend domain repository)
- Fixed bug where policy versions are returned by REST API in reverse
order
- all unit tests working

xml catalogs, according to latest changes of Flat-file-based PAP DAO
'file...' renamed to 'flatfile...' in all identifiers
- Fixed issues with unit tests copying/deleting/filtering directories
with Java 7 NIO package

data on disk
- Added feature support and unit test for automatic removal of versions
if too many (above max version count per policy)

'openjdk-7-jdk | oracle-java7-installer' to fix issues with APT
installation of virtual packages (e.g. java7-jdk)

Add special version 'latest' in URL path .../policies/p1/latest, e.g. to get latest version of policy 'p1'
Changed representation type for policy version from String to PolicyVersion class (from core-pdp-api dependency)

- Default domain rootPolicyRef no longer has 'Version' specified so that the root policy is always the latest version added via the PAP (by default).

- Hidding file paths from error messages

version allowing versioning of policies and PolicySetIdReference as
defined in XACML (id, version patterns)
- New domain properties externalId and rootPolicyRef (root policy
referencing)
- Upgraded the PDP configuration files to the new authzforce-ce-core
version (schema, etc.) using new PAP DAO in authzforce-ce-pap-dao-file
project and its ref policy provider supporting policy set references
with versioning of policies
- Domain IDs and Policy IDs are base64url-encoded
- File tree is organized in the form domainID/policyID/version.$suffix
(e.g. .xml)
- New global conf properties: max number of policies per domain, max
number of versions per domain
- Unit tests for the REST API resources/operations