[server/session] fix typo in keep_cnxset_mode docstring

[breadcrumbs] Small breadcrumb components refactoring * use `open_breadcrumbs` and `close_breadcrumbs` methods where applicable in the BreadCrumbEntityVComponent hierarchy * include the first separator related code in `open_breadcrumbs` to avoid code duplication Closes #3223911.

[views/dot] use an inlined svg for schema and workflow graphs These are currently served as "temporary" pngs which are actually consummed immediately. Which means they cannot be requested twice and any further attempt will yield an error in the logs and some end-user surprise. There is no known acceptable workaround for IE-8 (and previous versions). SVGWEB could be workable but it's not trivial to integrate it properly. Closes #3400448.

[release notes] Documents one() and find() addition

[js] noop is undefined in plain javascript (related to #2786674)

[css] drop shadow.gif & use a couple of rules (closes #3381435)

[css] replace old rounded corners hack by css rules Closes #3381426.

[views/templates] provide a modal main template (closes #3274672) The current NonTemplatableViewTemplate may seem to provide the desired feature if a '__notemplate' is provided in the form, unfortunately, it: * wraps the view in a spurious div * calls view.set_stream(), which has the effect of wiping any js/css resource recorded until then by the view, leading to hard-to-track missing resources symptoms

[js/widgets] fix the InOut widget with modern jQuery versions Several things are done there: * reduction in size and complexity of the code * the unused defaultsettings are removed * the initial `unlinked` list is now correctly populated from python-side * the unit test is adjusted because it tested an irrelevant implementation detail which is no longer true (but the widget of course still handles correctly the linkto information) Tested with ie7, ie9, chromium, firefox. Tested with jQuery 1.6 (cw 3.17.x) and 1.10. Closes #3154531.

[autoform] Allow overridding of permissions checks Closes #3063930

[schema] fix unique together index handling We now provide a more compact indexname, using the schema constraint entity type and the position of the columns set in the entity type unique constraints list. This avoids a nasty name truncation issue. The UniqueTogetherError object is made smarter: it computes the rtypes, abstracting the underlying backend (pg/sqlserver vs sqlite). The `user friendly` adapter is much simplified since there is no longer any truncation issue. Uses a new logilab.database version (ticket #151507) and a new yams version (ticket #189299) Closes #2514939 [jcr: disable hooks when temporarily dropping CWUniqueTogetherConstraint entities]

[pyrorql] deprecate pyrorql source (closes #2919299)