add migration script for the new cwuri metadata attribute

fix indentation problems in bootstrap_migration (use 4 spaces instead of 3)

fix mkstemp() usage in migration commands

fix a couple NameErrors

move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here

backport stable branch into default

merge

new cwuri metadata + a few tests fixes on the way

[tests] fixes (including two operations renaming)

add simple tests for standard metadata hooks

[tests] remove some other 'meta' relation usage in tests

fix SystemHook declaration, accepts=('',) doesn't mean anything

merge

add list of cubes included in the standard library

#344747: add env var CW_MODE

merge

fix schemaserial tests: meta doesn't exist anymore

[refactor] #342855: replace uses of (deprecated) mktemp

rename environment variables

[cleanup] fix typo

#343093: display workflow

[cleanup] fix tests

merge

#343227: display the workflow history of any entity

[cleanup] fix tests

[cleanup] fix deprecation warnings

cleanup

move all schema related views where they belong (eg not startup), fix schema graph views

sparql: support for literal restriction

add sameAs support in cubicweb standard schema

#197873: quick access to info for bug report

[stdlib] list of cubes included in the cubes standard library

sparql support for limit/offset/orderby

cleanup/document/refactor

python-lxml is now a real dependency

use space as separator, dot may be found in xml ns

distinct / reduced support

possibility to choose results format, set a nicer file name on sparqlxml view

use space as separator, dot may be found in xml ns

simple implementation of sparql XML resultset view

merge

quick and dirty support from simple sparql queries + base ui

does not make sense any more

a note about branches

add classifiers

optional rset

should ensure lgc is configured to not use mx to avoid error if backend module is missing mx support

merge