Removed author from cards (author may not be an available field)

src/components/Cards/ImageCard.js

@@ -17,7 +17,6 @@ const ImageCard = (
     >
       <CardTitle
         title={text}
-        subtitle={`by ${ author }`}
       />
       {
       image && <CardMedia aspectRatio="wide">
@@ -33,7 +32,6 @@ const ImageCard = (
 );
 
 ImageCard.propTypes = {
-  author: PropTypes.string,
   image: PropTypes.string,
   onClick: PropTypes.func,
   onImageLoaded: PropTypes.func,

src/components/EntryListing.js

@@ -77,7 +77,6 @@ export default class EntryListing extends React.Component {
     const card = Cards[cardType] || Cards.unknown;
     return React.createElement(card, {
       key: entry.get('slug'),
-      author: entry.getIn(['data', 'author']),
       collection,
       description: entry.getIn(['data', collection.getIn(['card', 'description'])]),
       image: entry.getIn(['data', collection.getIn(['card', 'image'])]),