* stable-2.9:
Link to solved issues from 2.9 release notes
Reindex: Include exception cause when dying
Fix the request wrapper for http requests served from plugins
Fix a possibility to overcome BLOCK permission
Add asciidoc build back in the Documentation folder
Change CopyableLabel to hide onKeyUp
Conflicts:
gerrit-server/src/main/java/com/google/gerrit/server/project/PermissionCollection.java
Change-Id: I1ebcc44873eb12acd80b4a0a98d22a73c69a886c