Revert "[api] update search user api"

This reverts commit c33941e0e4.

seahub/api2/views.py

@@ -360,15 +360,13 @@ class SearchUser(APIView):
         # remove duplicate emails
         search_result = {}.fromkeys(search_result).keys()
 
-        try:
-            include_self = int(request.GET.get('include_self', 1))
-        except ValueError:
-            include_self = 1
-
-        if include_self == 0 and username in search_result:
-            # reomve myself
+        # reomve myself
+        if username in search_result:
             search_result.remove(username)
 
+        if is_valid_username(q) and q not in search_result:
+            search_result.insert(0, q)
+
         try:
             size = int(request.GET.get('avatar_size', 32))
         except ValueError: