fix: don't allow only spaces in description

ref issue #778

Author: maxceem

src/components/ChallengeEditor/TextEditor-Field/index.js

@@ -52,7 +52,7 @@ class TextEditorField extends Component {
             readOnly={readOnly}
           />
         </div>)}
-        {challenge.submitTriggered && !challenge.description && (
+        {challenge.submitTriggered && (challenge.description || '').trim().length === 0 && (
           <div className={styles.error}>Public Specification is required</div>
         )}
         {!readOnly && shouldShowPrivateDescription && !showShowPrivateDescriptionField && (<div className={styles.button} onClick={this.addNewPrivateDescription}>

src/components/ChallengeEditor/index.js

@@ -673,7 +673,10 @@ class ChallengeEditor extends Component {
       const value = challenge[key]
 
       // this check works for string and array values
-      isRequiredMissing = isRequiredMissing || !value || !value.length
+      isRequiredMissing = isRequiredMissing ||
+        !value ||
+        (_.isString(value) && value.trim().length === 0) ||
+        (_.isArray(value) && value.length === 0)
     })
 
     return !(isRequiredMissing || _.isEmpty(this.state.currentTemplate))