Merge branch 'update-appmonitor' into 'master'

public_html/appmonitor/classes/appmonitor-client.class.php

public_html/appmonitor/git_update_appmonitor.sh

public_html/appmonitor/plugins/apps/concrete5.php

public_html/appmonitor/plugins/apps/dokuwiki.php

...ic_html/appmonitor/plugins/apps/iml-appmonitor-server.php

public_html/appmonitor/plugins/apps/inc_appcheck_end.php

public_html/appmonitor/plugins/apps/inc_appcheck_start.php

public_html/appmonitor/plugins/apps/matomo.php

public_html/appmonitor/plugins/apps/nextcloud.php

public_html/appmonitor/plugins/apps/shared_check_ssl.php

public_html/appmonitor/plugins/apps/wordpress.php

public_html/appmonitor/plugins/checks/diskfree.php

public_html/appmonitor/plugins/checks/httpcontent.php

public_html/appmonitor/plugins/checks/mysqlconnect.php