to be able to upgrade to Subscription more easily

Only the logics around the config file is removed.
The rest of the support of V6 form is still to be removed.
Related failing tests have been removed. This is dead code, so the risk is known and accepted.

Closes [RUNTIME-127](https://bonitasoft.atlassian.net/browse/RUNTIME-127)

- filter logoutservice call to perform OIDC logout in addition of bonita logout
- perform OIDC global logout with configured IdP URL
- only proceed to OIDC logout if there is a keycloak session. otherwise delegate to logoutservice
- only re create the HTTP session in case of a standard authentication
- support guest user behavior (add parameter to redirect to IdP login page when clicking on lign in in layout)

Covers [RUNTIME-68](https://bonitasoft.atlassian.net/browse/RUNTIME-68)

* feat(SSO): support authentication with OIDC

- add servlet filter and authentication manager
- support tenant configuration
- add compose file for manual tests
- add api to authentication filter
- exclude jackson to avoid conflict with the version provided by engine
- pass through keycloak OIDC filter even though there is a bonita
session or the URL is public if there is an OIDC account in the session
to avoid not detecting session change or invalid
- add specific authentication filter for the REST API in order to
benefit from the isAlready logged in rule that recreate the session if
the authentication manager lets you in

Covers [RUNTIME-57](https://bonitasoft.atlassian.net/browse/RUNTIME-57

)

Co-authored-by: hugues.bretin <hugues.bretin@bonitasoft.com>

- remove tests as this is unsupported code

* chore(branding): Add new information for full branding version name

* Add information in the release script

Co-authored-by: abirembaut <anthony.birembaut@bonitasoft.com>

* chore(branding): Add new information for full branding version name

* feat(about platform modal): Add platform version to the about modal

- rename platform version to branding version
- update property name to be consistent with distrib

covers [BR-655](https://bonitasoft.atlassian.net/browse/BR-655)

covers [BR-655](https://bonitasoft.atlassian.net/browse/BR-655)

covers [BR-655](https://bonitasoft.atlassian.net/browse/BR-655)

the configuration

* apply trim() when reading a property value

Covers [BPO-645](https://bonitasoft.atlassian.net/browse/BPO-645)

* fix(image download servlet): avoid script execution

Covers [BPO-664](https://bonitasoft.atlassian.net/browse/BPO-664)

* avoid reading locale directly in the URL in GWT portal
This is to prevent GWT portal to strore an unsupported locale in the
cookie if it is passed in the URL _l param.

covers [BPO-543](https://bonitasoft.atlassian.net/browse/BPO-543)

- use FINEST log level instead of FINE when the locale is reduced to
just the language

covers [BPO-543](https://bonitasoft.atlassian.net/browse/BPO-543)

* fix(browser locale): Standardize browser locale logs

- improve log message in case of locale not available
- avoid retrieving the browser locale and logging for nothing the the
homepage servlet

covers [BPO-543](https://bonitasoft.atlassian.net/browse/BPO-543)