* Change: use new settings for handling of read state
* Change: add new setings to the SQL-files for update and installation
* Change: queries for new settings and removal of outdated settings to the update script
* Change: remove outdated setting from the SQL file for installation
* Change: new form elements and language strings for read status handling
* Fix: add a check for non exisiting setting reset_read_state
* Fix: wrong name of setting in the form elements
* Change: ensure a valid value for the read state reset method
* Fix: correct wrong name for form field and hardcoded value
b2a66abba7