Display hovered filename over the metadata instead of pushing down.

Previously the expanding filename would push the metadata down
and out of the card div. Now it displays on top.

frontends/etiquette_flask/static/css/photo_card.css

@@ -136,6 +136,7 @@
     justify-self: start;
     grid-area: filename;
 
+    position: relative;
     overflow: hidden;
 
     min-width: 100%;
@@ -157,6 +158,14 @@
 {
     overflow: visible;
     max-height: none;
+}
+.photo_card_filename:hover a
+{
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    background-color: inherit;
     z-index: 1;
 }
 .photo_card_tags