add/fix label tooltips (#1278)

* Move tooltip to right

* Change function to only return truncated string

* add tooltip to category label

* use position instead of PopoutPosition

client/src/util/maybeTruncateString.js

@@ -1,18 +1,12 @@
 const maybeTruncateString = (str, maxLength) => {
-
   let truncatedString = null;
-  if (
-    str.length > maxLength
-  ) {
-    truncatedString = `${str.slice(
-      0,
-      maxLength / 2
-    )}…${str.slice(
+  if (str.length > maxLength) {
+    truncatedString = `${str.slice(0, maxLength / 2)}…${str.slice(
       -maxLength / 2
     )}`;
-  } 
+  }
 
-  return truncatedString || str;
-}
+  return truncatedString;
+};
 
-export default maybeTruncateString;
+export default maybeTruncateString;