XWIKI-9243: Possible nullpoint in XWikiDocument#getXObjectProperty when asking for object that does not exist
XWIKI-9245: Various error logs when asking SOLR ro index something that does not exist
XWIKI-9246: Extension Manager UI behaves badly when multiple jobs are triggered
* Replace #parse with #evaluate + #include because the first "randomly" fails to register the Velocity macros defined in the parsed template.
* Fix the progress bar when the job was scheduled but hasn't started yet.
* The uninstall plan job was executed synchronously..
XWIKI-9244: Errors in the console when accessing a wiki that doesn't exist
XWIKI-9247: Make Solr indexer threads daemons
XWIKI-9247: Make Solr indexer threads daemons
* more cleanup
XWIKI-9248: Give scripts access to the Solr queue of entities to index/delete
Use the right dependency
Bulletproofing
Move to warn
[misc] Fix failing test.
[Misc] Improvement suggested by Sergiu to fix the "Cannot retrieve method getname from object of class java.lang.Class due to security restrictions." message displayed in the logs (see XWIKI-8754)
XWIKI-9236: Introduce new Wiki Module to manage wiki descriptors
* Use a Cache in the end since it allows for better configuration (cache size) and manageability (like flushing the cache using JMX)
XWIKI-9251: IRC Bot uses the wrong configuration for notifying about document changes
XWIKI-9236: Introduce new Wiki Module to manage wiki descriptors
* Use the new WikiDescriptorManager.getAll() method to get the list of all wikis
XWIKI-9236: Introduce new Wiki Module to manage wiki descriptors
* Add explanation
Merge branch 'master', remote-tracking branch 'origin' into feature-resource-and-wiki-modules