Merge pull request #43 from gdelhumeau/master

XE-1325: Integrate the Workspaces feature by default in the default XE distribution.
[release] Fix parent POM.
[release] Replace xwiki-enterprise-ui-all leftover with xwiki-enterprise-ui-mainwiki-all.
[misc] Remove duplicated dependency.
[release] Fix dependency version.
[release] Fix version.
XWIKI-9437: Fully allow using XWiki when cookies are turned off
* Fix broken test
[misc] Add missing features
XWIKI-9457: Confusing information in Installed Extensions after migrating from 4.5.4 to 5.2M2.

* Fix pom.xml for xwiki-enterprise-ui-mainwiki-all & xwiki-enterprise-ui-wiki-all.
XWIKI-9457: Confusing information in Installed Extensions after migrating from 4.5.4 to 5.2M2.

* Fix pom.xml for xwiki-enterprise-ui-mainwiki-all & xwiki-enterprise-ui-wiki-all.
XWIKI-9457: Confusing information in Installed Extensions after migrating from 4.5.4 to 5.2M2.

* Fix pom.xml for xwiki-enterprise-ui-mainwiki-all & xwiki-enterprise-ui-wiki-all.
Merge pull request #44 from gdelhumeau/XWIKI-9457

XWIKI-9457: Confusing information in Installed Extensions after migrating from 4.5.4 to 5.2M2
XWIKI-9433: When upgrading a (sub)wiki, the platform should not always install xwiki-enterprise-ui-wiki.

* Implement a "migrator" script service that returns the UI Extension ID to use
  depending on the nature of the subwiki (it could be a standard subwiki or a workspace).
XWIKI-9433: When upgrading a (sub)wiki, the platform should not always install xwiki-enterprise-ui-wiki.

* Add a better description to the module.
XWIKI-9433: When upgrading a (sub)wiki, the platform should not always install xwiki-enterprise-ui-wiki.

* Add a priority to override the default distribution service.
XWIKI-9433: When upgrading a (sub)wiki, the platform should not always install xwiki-enterprise-ui-wiki.

* Bug Fix.
XWIKI-9433: When upgrading a (sub)wiki, the platform should not always install xwiki-enterprise-ui-wiki.

* Bug Fix.
Merge pull request #45 from gdelhumeau/XWIKI-9433

XWIKI-9433: When upgrading a (sub)wiki, the platform should not always install xwiki-enterprise-ui-wiki.
XE-1327: Embed WikiStream in XE
XWIKI-9456: After the creation of a new (sub)wiki, the Distribution Wizard should not appear.

* Rename xwiki.extension.distribution.oldwikiui to xwiki.extension.distribution.wikiui
* Inverse xwiki.extension.distribution.wikiui to xwiki.extension.distribution.workspaceui
* Take this change into account in the migrator.