Added support for modifying downloaded files

src/app/file-card/file-card.component.css

@@ -0,0 +1,33 @@
+.example-card {
+  width: 150px;
+  height: 125px;
+  padding: 0px;
+}
+
+.deleteButton {
+  top:-5px;
+  right:-5px;
+  position:absolute;
+}
+
+/* Coerce the <span> icon container away from display:inline */
+.mat-icon-button .mat-button-wrapper {
+  display: flex;
+  justify-content: center;
+}
+
+.image {
+  max-width:100%;
+  max-height:100%;
+}
+
+.example-full-width-height {
+  width: 100%;
+  height: 100%
+}
+
+.centered {
+  margin: 0 auto;
+  top: 50%;
+  left: 50%;
+}