Add @horst-n PR #475, plus a few other minor adjustments
Fix issue #478 where Pagefiles::page (as opposed to Pagefiles::getPage()) could sometimes refer to the wrong Page object.
Evaluating Pageimage::size addition further, need more testing
Repeater "Add Item" link label change
Merge branch 'repeater-link' of https://github.com/darrencoen/ProcessWire into repeater-link