[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

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usr/bin/cubicweb-ctl usr/bin/

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usr/lib/PY_VERSION/*-packages/cubicweb/cwctl.py

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../cubicweb-ctl.bash_completion etc/bash_completion.d/cubicweb-ctl