Fixe missing modal and add user feedback to flat buttons in analysis

web/app/static/css/nopaque.css

@@ -28,6 +28,16 @@ main {
   height: 19.5px !important;
 }
 
+/* flat-interaction addition to show background color */
+
+.flat-interaction {
+  background-color: #DCDCDC !important;
+}
+
+.flat-interaction:hover {
+  background-color: #FFFFFF !important;
+}
+
 /* CSS for clickable th elements in tables. Needed for sortable table data with
 list js. On click on th header elements will be sorted accordingly. Also a caret
 indicator will show up how the column is sorted right now.; */