backport stable branch

[rql2sql] more cases fixed where something is wrongly added to GROUPBY, causing unexpected results for the query

[book] rewrite / complete the RQL language chapter

[all] remove pattern "try: function() except AttributeError: pass" (closes #1787966)

[cw-ctl] command list should not break when cube depends on version None (closes #1787209)

[uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString) modify magic 'js' object to consider them as well

backport stable

[repo, looping task] raise a custom exception when repository is shuting down, avoid looping task to be restarted in such case. Closes #1021276

[formfields] use support_args instead of catching type error avoid hiding other issues and making debugging difficult

[cw.ajax] fix loadxhtml documentation and warn when called on an empty elements list

[etwist] log missing file even in debug mode

backport stable

[test] run and fix utils and uilib doctests

Display proper date in plot/flot (closes #1725589)

[doc] fix NameError in bfss tutorial

[js/css concat] do not return 404 when resources of a concatenated data URL does not exist, unless in debugmode; closes #1745644

[server] "overrule" case insensitivity of database name (closes: #611294) The only instances where you are required to use quotes are either when a database object's identifier is identical to a keyword, or when the identifier has at least one capitalized letter in its name. In either of these circumstances, you must remember to quote the identifier both when creating the object, as well as in any subsequent references to that object

[tests] update repository tests with new `use_cwuri_as_url` attribute This attribute was intriduced by changeset 92fd4b777016

backport stable

Added tag cubicweb-debian-version-3.12.8-1 for changeset cf49ed55685a

Added tag cubicweb-version-3.12.8 for changeset 50122a47ce4f

3.12.8

[migration] litle enhancements and a fix to patch accidentally pushed two revisions ago

[controller] UndoController: fix output method (closes: #1776091) Fix buggy direct output in `UndoController.publish()`. Raise now a ValidationError instead of malformed string Changes: * raise ValidationError when an error occured in undo * use the new message mechanism based on _cwmsgid If errors are not fatal, you have to change publish() method.

[migration] closes #1777411: schema modification commands shouldn't crash if already exists

[rqlrewrite] closes #1772135: 1. don't try to reuse a relation from another statement (eg because a subquery has been introduced) 2. _use_orig_term should consider the current statement

test fixes

[datafeed cw parser] refactor: split logic that was in the parser into: * an "item builder" component, turning an etree xml node into a specific python dictionnary representing an entity * "action" components, selected given an entity, a relation and its role in the relation, and responsible to link the entity to given related items (eg dictionnary) This changes make it easy to add new action or to override existing one's behaviour according to the entity, the relation, etc... Also refactor the xml view so one can also override what's included in the tag used to mark the entity as used by a relation, hopefully allowing to reduce the number of http requests needed for a full datafeed import.

[datafeed, entities] url for entities from a datafeed source should be on their origin site. Closes #1769391

cleanup