Fix URL
XWIKI-10327: Human requests should not be blocked when XWiki's initialization is executing
* minor fix
XWIKI-10336: Solr module triggers a build dependency on servlet api
* better fix
Revert "XWIKI-10308: Upgrade to Prototype.js 1.7.2"

This reverts commit 30d44e0714f9f10486bfd8c3d3109d7bb6ff2fc8.
[Misc] fix bug in error logging
[Misc] A bit more explanations
XWIKI-10331: Introduce a new velocity variable to hold the current panel column width.

* Use camel-case instead.
XWIKI-10341: Integrate LESS CSS into XWiki Platform.
XWIKI-10341: Integrate LESS CSS into XWiki Platform.

* Bug fix.
XWIKI-10341: Integrate LESS CSS into XWiki Platform.

* Clean the cache at startup.
XWIKI-10341: Integrate LESS CSS into XWiki Platform.

* Remove the useless dependency for batik-js on oldcore, which collide with Rhino (used by lesscss-java).