Added PHP 7 check in installer and updater.

Till Brehm

2016-04-22 ebd0e986ed11f2a34fb58cdd33efbfab192083ad

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ALTER TABLE `client` CHANGE `web_php_options` `web_php_options` VARCHAR( 255 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT 'no,fast-cgi,cgi,mod,suphp,php-fpm';