Exponentcms Exponent CMS → 2.3.8

Though Exponent basically runs under php7 with a recent fix to expPaginator, we'll need to scrub the code for at least:

• deprecated php4 style constructors produce warning; class name function used as constructor instead of __construct(); primarily in 3rd party libs such as tar/zip/pear
• cannot dereference an array/object as a property produces fatal error; such as $record->$params['model_field']