[doc] update some copyrights

[repo, ms] fix pb introduced in 6941:9ed02daa7dbb resulting in missing relation deletes when an entity is deleted

[tabs js] merge tabs and lazy js files into cw.ajax.js and use camel case names to satisfy js coding standards

[schema, ui] fix is_subobject to skip cw_source relation (else everything is considered as a subobject, since this relation is now composite)

[admin ui] nicer views for users/groups management

[test, ui] mark CWSourceSchemaConfig as an internal type

backport stable

[js] using the actual registry fixes spurious warnings

[pyrorql source] using 'time' option type is more convenient

[sources] refactor source creation and options handling * options validation * ease proper update of source's config on configuration change

[sources] rewrite the way pyrorql mapping are stored in the database so it can be reused for other sources (eg datafeed+cwxml)

[sources] reorganize abstract source code, drop no more used cleanup_entities_info and _cleanup_system_relations methods

[source schema] fix permission pb on cw_host_config_of relation + add composite on cw_source, so entities from a source are properly removed when the source is removed

[repo, ms] optimise external source deletion by using source's eid instead of name

[rql2sql] should not select a neged relation as principal + simplify code for sql generation for attribute relation

[c-c] fix crash on delete instance + potential others when user don't specify db user's password

add a rql directive to restructuredtext

[pkg] bump dependency on logilab.database

Added tag cubicweb-debian-version-3.10.8-1 for changeset 132b525de25b

Added tag cubicweb-version-3.10.8 for changeset e581a86a68f0

3.10.8

i18nupdate

undo part of #6911

backport stable

[test] add test for != operator

[rql2sql] fix bug with NOT in "fake" having terms

[doc/book] simplify & fix the overview chapter

ooops :D

cleanups

[ctxcomponents vreg] allow to specify 'no cache' using __cache argument