Fix 3 errors on socialengine install and 2 smaller ones.

PHP 7 OK MySQL (required) Requires one of the following extensions: mysql, mysqli, pdo_mysql mod_rewrite OK PHP Safe Mode OFF OK PHP Register Globals OFF OK (required) GD The GD Image Library is required for resizing images. Imagick For optimal results with GIF images, we recommend adding the Imagick extension. Iconv OK (required) Multi-byte String The Multi-byte String (mbstring) library is required. PCRE OK Curl OK Session OK DOM The DOM (Document Object Model) extension is required for RSS feed parsing and link attachments. Exif OK Public Directory Permissions OK Temp Directory Permissions OK Settings Directory Permissions OK Packages Directory Permissions OK Install Permissions OK Language Directory Permissions OK Theme Directory Permissions OK OpenSSL OK