This reverts commit c980f2ee.

Entry point of bwSync&Share changed: user coming from cloud portal are now directly sent to the "federated login service" 

Modification:

- introduce an anotation called ForeignKey. This can be use to ensure
    that the uuid reference in another entity is valid and cascading
    effect are maintained.
- modify some entities and added some new entities like Image, Person
    and Software. Also, corresponding repositories and services.
- redesign the base service and create a kind of base repository

Target: master

Motivation:

We need to store media data for some of the entities and neo4j is
not design to store images, video, etc.. Hence, to avoid using
multiple dbs, we sort for a solution that can store the metadata
and the media data.

Modification:

- remove neo4j dependency and add mongo
- change the entities details and re-design it to suit the new db
- adjust the api design
- delete all neo4j relationship pojos
- adjust the tests according to the new definitions

Result:

Cerebrum now uses mongo db.

Target: master

Motivation:

Meeting up with the new API design requires that the market-user
and organisation entity are realign.

Modification:

- factor out some part of market-user and create a new class (person)
- make organisation enity to extend audit-metadata and some properties
    were added.
- use the lombok project to reduce the boilerplate code in both
    the market-user and organisation entities.
- add 'person' to the list of PrefixEnum in the CerebrumEntityUuidGenerator

Result:

Market-user and Organisation entity are now re-worked

Target: master

Motivation:

Some reported vulnerabilities of the dependencies by OWASP make
the pipeline broken.

Modification:

- upgrade spring boot starter parent version from 2.3.5.RELEASE
    to 2.3.10.RELEASE
- upgrade hibernate-validator from 6.0.19.Final to 6.2.0.Final
- updgrade neo4j-java-driver-spring-boot-starter from 4.1.1.0
    to 4.2.4.0
- update list of OWASP check and supress some false positive
    alarms

Result:

Build pipeline succeeds.

Target: master

Motivation:

To gain insight on cerebrum-app, the spring framework provide
the facility to expose the application metrics to monitoring
service like Prometheus on Kubernetes.

Modification:

- enable graceful shutdown
- add spring boot actuator and prometheus registry micrometer
    dependencies
- expose the actuator endpoint that will provides: health,
   info, metric etc.
- avoid 404 error on request to /favicon.ico

Result:

Cerebrum now makes it metrics available and can be shutdown
gracefully.

Target: master

Motivation:

To fullfill the service metadata description defined by the
cloud management board, new properties need to be added to
the market-service entity.

Modification:

- add lombok dependency to the cerebrum project to avoid some
    boilterplate codes
- add some few new properties to the market-service entity
- enable database auditing to keep track of when an entity was
    created and when it was last modified.
- adjust the MarketServiceRepository to fit the new market-service
    properties definition

Result:

Market-service entity contain some new properties and some few name
change.

Target: master