fix to enable import of answers from a different installation/version of LS
Fixed issue #06918: Make Group Members user list work in same way as
Survey Permissions
Corrected a typo on variable name (table_start_index).
Made fallback import optionnal and disabled by default.
Added code to check if at least one answer field could be imported
before committing import.
Dev Added removeResponse function for removing a response from a plugin.
In invite admin, hide buttons the user isn't allow to use.
Make sure the number of columns is sufficient in force import.
A few styling changes.
Dev Fixed issue with table names in Windows. Now plugin prefix is
converted to lower case by default.
Dev Added checkAccess support to Api object.
Dev Added support for buttons in plugin settings helper.
Dev Added createUrl function to Api object.
Dev Improved URL support for plugin settings.
New feature: Added beforeLogout and afterLogout events for authentication plugins
Changed feature: made server key configurable in AuthWebserver plugin, default is REMOTE_USER
Dev: wrong label in admin interface
Fixed #8216: Unable to get results when timing is on (ambiguous column id)
Dev: Fixed issue #8246: Can't browse token
Dev: dabf347aa4e79c9b5b6aceb777600857e4149750 child
Fixed #8184: Deactivated export options are not re-activated
dev: All options now have onclick to enable disabled elements, moved Format to top
New feature #8214: DateTimepicker for date/time question

Dev: Also some cleanup in date.js
Dev: You can now not only pick a date but
Dev: also a time or a combination or just month and
Dev: year in the date question.
Dev: Question to the pros: The timepicker is not yet i8n.
Dev: How can I use gT() in a .js?
Dev: add language files for timepicker