1) This version info is the initial version that was installed on the server and not the current version, the current version number can be found in the config.inc.php field. You can leave the value as it is.
2) Quota is handled by the linux quota system and linux calculates it in realtime as far as I know, ispconfig is not involved in that. What isponfig is doing is to set new quotas with the normal commands like edquota and the quota displayed in ispconfig is the output of the command repquota. Please be aware that the quota in the panel is not displayed in realtime, so it may take some time until it changes. If you like to see the current quota in realtime, use the repquota command.