[repo] move repo.gc_stats to Service API (closes #2951068)
We currently have a method on the repo that anyone can call. `call_service`
gives a similar thing, modulo:
* can be restricted access to manager only (thanks to selection on services),
* less unrelated code on the repository class,
* no need to fetch a reference to a repo object from the client side
* (`req._cnx.repo` is not an API and config.repository() is on its way out).
The old way to access this information (repo.gc_stats()) is deprecated.
CubicWeb semantic web framework===============================CubicWeb is a entities / relations based knowledge management systemdevelopped at Logilab.This package contains:- a repository server- a RQL command line client to the repository- an adaptative modpython interface to the server- a bunch of other management toolsInstall-------More details at http://docs.cubicweb.org/admin/setupGetting started---------------Execute:: apt-get install cubicweb cubicweb-dev cubicweb-blog cubicweb-ctl create blog myblog cubicweb-ctl start -D myblog sensible-browser http://localhost:8080/Details at http://docs.cubicweb.org/tutorials/base/blog-in-five-minutesDocumentation-------------Look in the doc/ subdirectory or read http://docs.cubicweb.org/