Implemented: FS#1251 - Add option to software installer to create databases

install/sql/ispconfig3.sql

interface/web/admin/lib/lang/en_package_install.lng

interface/web/admin/lib/lang/en_software_package_install.lng

interface/web/admin/lib/lang/en_software_package_list.lng

interface/web/admin/software_package_install.php

interface/web/admin/software_package_list.php

interface/web/admin/templates/language_add.htm

interface/web/admin/templates/language_complete.htm

interface/web/admin/templates/language_edit.htm

interface/web/admin/templates/language_export.htm

interface/web/admin/templates/language_import.htm

interface/web/admin/templates/software_package_install.htm

interface/web/admin/templates/software_package_list.htm

interface/web/admin/templates/software_update_list.htm

server/plugins-available/software_update_plugin.inc.php