Revert "search valid usernames and hashtags"

This reverts commit d75cf96f25.

js/twister_following.js

@@ -367,18 +367,12 @@ function userSearchKeypress(item) {
         // Enter pressed
         var dummy = $('<a></a>');
         if (prefix == '#') { // hashtag
-            partialName = _extractHashtag(partialName);
+            dummy.attr('href', $.MAL.hashtagUrl(partialName));
-            if (partialName) {
+            dummy.text('#' + partialName);
-                dummy.attr('href', $.MAL.hashtagUrl(partialName));
+            openHashtagModal.call(dummy.get(0), item);
-                dummy.text('#' + partialName);
-                openHashtagModal.call(dummy.get(0), item);
-            }
         } else { // username
-            partialName = _extractUsername(partialName);
+            dummy.attr('href', $.MAL.userUrl(partialName));
-            if (partialName) {
+            openProfileModal.call(dummy.get(0), item);
-                dummy.attr('href', $.MAL.userUrl(partialName));
-                openProfileModal.call(dummy.get(0), item);
-            }
         }
         return false;
     }