[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.
# -*- coding: utf-8 -*-
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#
# Put here information about external resources / styles used by your cube,
# or to overides existing UI properties.
#
# Existing properties are available through the `sheet` dictionary available
# in the global namespace. You also have access to a `data` function which
# will return proper url for resources in the 'data' directory.
#
# /!\ this file should not be imported /!\
###############################################################################
# CSS stylesheets to include in HTML headers
# uncomment the line below to use template specific stylesheet
# STYLESHEETS = sheet['STYLESHEETS'] + [data('cubes.%(cubename)s.css')]