[views] implement json / jsonp export views (closes #1942658)
Json export views are based on the same model as CSV export views.
There are two distinct views :
- *jsonexport* : direct conversion of the result set into json
- *ejsonexport* : convert entities into json
The JSONP parameter is named ``callback`` (same as on geonames, dbepdia
and a lot of sites)
An optional `_indent` request parameter can be passed to pretty print
the results.
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# Put here information about external resources / styles used by your cube,
# or to overides existing UI properties.
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# 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 /!\
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# CSS stylesheets to include in HTML headers
# uncomment the line below to use template specific stylesheet
# STYLESHEETS = sheet['STYLESHEETS'] + [data('cubes.%(cubename)s.css')]