[web] add a ``anonymize-jsonp-queries`` option in file configuration (closes #2465388)
This option controls connection anonymizing before executing any query
for CSRF / safety reason.
option_group_changed('port', 'main', 'web')
option_group_changed('query-log-file', 'main', 'web')
option_group_changed('profile', 'main', 'web')
option_group_changed('max-post-length', 'main', 'web')