1.3.3 compatibility

[sonanchenko]

Dear @Takika

I've just tried to install this plugin to 1.3.3 roundcube.

the first issue I've faced:

[16-Nov-2017 09:45:06 Europe/Kiev] PHP Fatal error:  Uncaught Error: Call to undefined function get_input_value() in /home/data/www/webmail.in.ua/plugins/rc_foldersort/rc_foldersort.php:186
Stack trace:
#0 /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_plugin_api.php(493): rc_foldersort->sort_json_action()
#1 /home/data/www/webmail.in.ua/index.php(289): rcube_plugin_api->exec_action('plugin.rc_folde...')
#2 {main}
  thrown in /home/data/www/webmail.in.ua/plugins/rc_foldersort/rc_foldersort.php on line 186

I've fixed this by replacing
get_input_value with rc_utils::get_input_value

But then when I tried to open folder via WI:

[16-Nov-2017 09:54:40 Europe/Kiev] PHP Warning:  A non-numeric value encountered in /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_utils.php on line 270
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Stack trace:
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   1. {main}() /home/data/www/webmail.in.ua/index.php:0
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   2. rcube_plugin_api->exec_action() /home/data/www/webmail.in.ua/index.php:289
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   3. rc_foldersort->sort_json_action() /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_plugin_api.php:493
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   4. rcube_utils::get_input_value() /home/data/www/webmail.in.ua/plugins/rc_foldersort/rc_foldersort.php:186
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Warning:  A non-numeric value encountered in /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_utils.php on line 274
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Stack trace:
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   1. {main}() /home/data/www/webmail.in.ua/index.php:0
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   2. rcube_plugin_api->exec_action() /home/data/www/webmail.in.ua/index.php:289
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   3. rc_foldersort->sort_json_action() /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_plugin_api.php:493
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   4. rcube_utils::get_input_value() /home/data/www/webmail.in.ua/plugins/rc_foldersort/rc_foldersort.php:186
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Warning:  A non-numeric value encountered in /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_utils.php on line 278
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Stack trace:
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   1. {main}() /home/data/www/webmail.in.ua/index.php:0
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   2. rcube_plugin_api->exec_action() /home/data/www/webmail.in.ua/index.php:289
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   3. rc_foldersort->sort_json_action() /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_plugin_api.php:493
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   4. rcube_utils::get_input_value() /home/data/www/webmail.in.ua/plugins/rc_foldersort/rc_foldersort.php:186
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Warning:  A non-numeric value encountered in /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_utils.php on line 270
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Stack trace:
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   1. {main}() /home/data/www/webmail.in.ua/index.php:0
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   2. rcube_plugin_api->exec_action() /home/data/www/webmail.in.ua/index.php:289
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   3. rc_foldersort->sort_json_action() /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_plugin_api.php:493
[16-Nov-2017 09:54:40 Europe/Kiev] PHP   4. rcube_utils::get_input_value() /home/data/www/webmail.in.ua/plugins/rc_foldersort/rc_foldersort.php:187
[16-Nov-2017 09:54:40 Europe/Kiev] PHP Warning:  A non-numeric value encountered in /home/data/www/webmail.in.ua/program/lib/Roundcube/rcube_utils.php on line 274

Can you please assist?

My goal is manually sort folders in order to move important ones to top.

Thank you for any help you can provide.