[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.