XE-1348: WebRss doesn't support the tag parameter
XE-1349: Potential SQL injection in WebRss
XWIKI-9743: Activity Macro's RSS feed doesn't support passing multiple spaces or tags
XWIKI-9737: The user XWiki.Admin is still created in subwikis.

* Add XWiki.Admin in a new module: xwiki-enterprise-ui-admin-user.
Merge pull request #53 from gdelhumeau/XWIKI-9737

XWIKI-9737: The user XWiki.Admin is still created in subwikis.
XWIKI-9737: The user XWiki.Admin is still created in subwikis.

* Add xwiki-enterprise-ui-admin-user as an embedded extension of xwiki-enterprise-ui-mainwiki-all.
Merge pull request #54 from gdelhumeau/XWIKI-9737

XWIKI-9737: The user XWiki.Admin is still created in subwikis
* Add xwiki-enterprise-ui-admin-user as an embedded extension of xwiki-enterprise-ui-mainwiki-all.
XWIKI-9757: Rename createUser to createUserAndLogin + add API to create user without logging in

+ added new createUserAndLogin accepting a redirect URL
+ fix Panel test
XWIKI-9738: Finalize migration from workspaces to the new wiki API.

* Add xwiki-platform-wiki-workspaces-migrator as a dependency.
[Misc] Fix mainwiki-ui old names.
Merge pull request #56 from gdelhumeau/master

[Misc] Fix mainwiki-ui old names.
Merge pull request #55 from gdelhumeau/XWIKI-9738

XWIKI-9738: Finalize migration from workspaces to the new wiki API.
XWIKI-9738: Finalize migration from workspaces to the new wiki API.

* Add new migrators to xwiki-enterprise-data.
XWIKI-9738: Finalize migration from workspaces to the new wiki API.

* xwiki-enterprise-migrator is not necessary anymore.
Merge pull request #57 from gdelhumeau/XWIKI-9738

XWIKI-9738: Finalize migration from workspaces to the new wiki API.
[maven-release-plugin] prepare branch stable-5.3.x
[maven-release-plugin] prepare for next development iteration
[release] Incremented parent versions and/or version properties for the next development iteration