Add @horst's sharpening, auto-rotation and saving of IPTC data to the ImageSizer class. Thanks Horst! See the updated /site-default/config.php for new options where you can specify defaults. These can also be specified as options independently via the $options array to Pageimage class, $image->size($w, $h, $options), and related functions.
Fix issue with WireDatabasePDO having incorrect options format for the ERRMODE_EXCEPTION
Various minor fixes and tweaks.
Update LanguageTranslator to use human-readable JSON output when the PHP version (5.4+) allows: JSON_PRETTY_PRINT option to json_encode().
Small updates in preparation for later field dependency commits.