* user list: set pwg_token in POST data to user_list_backend.php
The POST data for the user data table request was empty, which could
cause user data retrieval to error out with HTTP 403 due to missing
the authentication token.
* user_list_backend: fix uninitialized variables
If iSortCol_0, sEcho, or sSearch are unset in the HTTP request, it
could cause variables to be uninitialized, potentially causing error
messages to be included in the HTTP response. These error messages,
if present, can prevent the JSON response from being parsed.
* user list: delete unnecessary quotes
Javascript object key names don't generally need to be quoted.
Remove some quotes that were introduced by a recent change that added
a body to the AJAX POST request to retrieve the user list.
bug 3053 fixed: columns "groups" and "privacy level" come back in Piwigo 2.6
user manager (which still needs improvement on filtering options...)
git-svn-id: http://piwigo.org/svn/trunk@27837 68402e56-0260-453c-a942-63ccdbb3a9ee
display registration date in user list.
work in progress, not finished yet.
git-svn-id: http://piwigo.org/svn/trunk@25475 68402e56-0260-453c-a942-63ccdbb3a9ee
