[misc] Remove @Unstable annotations for APIs introduced before 5.0M1
XWIKI-10080: FAQ Search no longer searches in the FAQ space only when using the SOLR search
* Simplify a bit the configuration.
XWIKI-10080: FAQ Search no longer searches in the FAQ space only when using the SOLR search
* More simplification.
* Change Main.SolrSearchConfig to merge the provided configuration with the default one.
[misc] Apply new XAR format.
[misc] Fix HTML validity (webstandards test).
[Misc] Improve slightly the error message
[misc] Replace call to deprecated method (and fix the build).
[Misc] Small loss of coverage after last commit (didn't expect it, sorry). Actually in practice it's tested in other modules so the overall coverage has slightly increased and no decreased...
[misc] We use different versions of Lucene on different branches so we must make sure the index folder is not reused across branches and even across tests.

(cherry picked from commit d98e1f777062b7c137e409fe1b989dc26d1d41b4)
XWIKI-10100: TRANSPORT_ERROR with SSO in tree view

 * avoid the NPE if the credentials are null
[Misc] Fix failing build.
Merge remote-tracking branch 'origin/master'
XWIKI-10076: Unselecting all the Blog categories for a Blog Post doesn't work

 * add hidden field so the save code knows we selected nothing
[misc] We different versions of Lucene on different branches so we must make sure the index folder is not reused across branches during tests.
[Misc] Fix name
[Misc] Fixed regressions introduced by commit https://github.com/xwiki/xwiki-platform/commit/ade4046 which moved the deprecated IncludeMacroParameters.getDocument() method to xwiki-platform-legacy-rendering-*. The main problem was that a lot of our code was still using {{include document="..."/}} (instead of {{include reference="..."/}}). The other problem was that I made a mistake and forgot to check for an empty "document" parameter.
XWIKI-10104: Move Crypto module to Commons
XWIKI-9339: Add a parameter to the livetable macro to force displaying hidden docs
XWIKI-10103: Improve the Panels home page by using a LiveTable
* Show hidden docs since Panels are hidden documents
XWIKI-10103: Improve the Panels home page by using a LiveTable
* Removed unnecessary new line