Basic 404 handling

js/ds.js

@@ -75,15 +75,13 @@ DataSpace.renderReport = async function (report,  archesJson, images)
 {
     let resource = report.resource; 
     let resKeys = Object.keys(resource);
-    // TODO prepare 404 page
-    if (!resKeys.length) {
+    let resType = resKeys[0].split(' ')[0]; 
+
+    if (!resKeys.length || ! (resType in this.RESOURCE_REPORT)) {
         location.href = '/404.html';
         return;
     }
     
-    let resType = resKeys[0].split(' ')[0]; 
-
-
     if (['Object', 'Context'].includes(resType)) {
         const geoJSON = JSON.parse(
             resource[`${resType} Coordinates`]
@@ -350,7 +348,7 @@ DataSpace.attachReadMore = function (cssClass, maxWords = 100)
             // TODO change this element, don't create a new one
             more.onclick = function () {
                 const less = document.createElement('span');
-                less.textContent = 'Less';
+                less.textContent = 'Show less';
                 less.className = 'text-primary c-hand';
 
                 // Hacky...