Apply xar:format
Apply mvn xar:format
Remove useless inject
XWIKI-9738: Finalize migration from workspaces to the new wiki API.

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

* Deleting the old workspace object at the very end of the migration, in order to be able to resume the migration when it is stopped.
Merge pull request #223 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.

* Minor fix.
Merge pull request #224 from gdelhumeau/XWIKI-9738

XWIKI-9738: Finalize migration from workspaces to the new wiki API.
XWIKI-9733: Stracktrace during the data migration when upgrading from 4.5.4 to 5.3M2
[Misc] Bulletproofing
XWIKI-9684: Tag RSS feature is missing
* Move deprecated keys to deprecated section since we've now removed the TagRss page which was the only page using them
XWIKI-9742: Remove wiki syntax from translations in the Wiki module.
XWIKI-9554: Top Active Members lists users that are not members.

* Renaming the gadget.
XWIKI-9706: Velocity macro unrendered on Administration - Wiki.

* Removing the useless section of the administration.
[misc] Group the fields in the Solr schema based on the entity type to see more clearly what fields can be queried for a given entity type.
[misc] Search response is not available when debug info is displayed.
XWIKI-9508: SOLR does not allow to match documents matching specific values in multiple xwiki properties
* We need an encodig scheme for Solr field names in order to be able to use special characters. This is required for dynamic fields that we add for XClass properties, where the space/page name can contain special characters, especially when the XClass is created by an user.
XWIKI-9508: SOLR does not allow to match documents matching specific values in multiple xwiki properties
* We need a dedicated EntityReference serialization syntax that doesn't use characters which are not allowed in a field name (i.e. which have special meaning in a Solr query). For instance we cannot use Space.Class^prop in a field name because ^ is a special character in Solr query syntax. We need a serializer/resolver (so both ways) because we want to be able to extract the EntityReference from the field name when displaying search results highlighting.
XWIKI-9508: SOLR does not allow to match documents matching specific values in multiple xwiki properties
* Allow subclasses of AbstractSolrMetadataExtractor to overwrite the way an XClass property is indexed.
XWIKI-9508: SOLR does not allow to match documents matching specific values in multiple xwiki properties
* Add support for dynamic aliases for multilingual fields. The list of supported locales is not hard-coded anymore in the solrconfig.xml but taken from the search request.