feat: remove info drawer and reintroduce singleton categories (#2421)

* refactor: drop non-session auth from frontend

* remove dataset drawer and reintroduce singleton values

client/src/components/categorical/category/index.js

@@ -494,12 +494,23 @@ const CategoryRender = React.memo(
     */
     const { numCategoryValues } = categorySummary;
     const isSingularValue = !isUserAnno && numCategoryValues === 1;
-
     if (isSingularValue) {
       /*
       Entire category has a single value, special case.
       */
-      return null;
+      const theOneValue = categorySummary.categoryValues[0];
+      return (
+        <div style={{ marginBottom: 10, marginTop: 4 }}>
+          <Truncate>
+            <span style={{ maxWidth: 150, fontWeight: 700 }}>
+              {metadataField}
+            </span>
+          </Truncate>
+          <Truncate>
+            <span style={{ maxWidth: 150 }}>{`: ${theOneValue}`}</span>
+          </Truncate>
+        </div>
+      );
     }
 
     /*

client/src/components/categorical/index.js

@@ -193,18 +193,17 @@ class Categories extends React.Component {
 
         {/* READ ONLY CATEGORICAL FIELDS */}
         {/* this is duplicative but flat, could be abstracted */}
-        {allCategoryNames.map((catName) =>
-          !schema.annotations.obsByName[catName].writable &&
-          (schema.annotations.obsByName[catName].categories?.length > 1 ||
-            !schema.annotations.obsByName[catName].categories) ? (
-            <Category
-              key={catName}
-              metadataField={catName}
-              onExpansionChange={this.onExpansionChange}
-              isExpanded={expandedCats.has(catName)}
-              createAnnoModeActive={createAnnoModeActive}
-            />
-          ) : null
+        {allCategoryNames.map(
+          (catName) =>
+            !schema.annotations.obsByName[catName].writable && (
+              <Category
+                key={catName}
+                metadataField={catName}
+                onExpansionChange={this.onExpansionChange}
+                isExpanded={expandedCats.has(catName)}
+                createAnnoModeActive={createAnnoModeActive}
+              />
+            )
         )}
         {/* WRITEABLE FIELDS */}
         {allCategoryNames.map((catName) =>