[findbugs] Fix throws signature

James Moger

2014-04-17 fa205f0c6bfa572a503caee44b5ff9f5086f99fb

 src/main/java/com/gitblit/manager/IUserManager.java

@@ -24,6 +24,7 @@
    *
    * @param username
    * @return true if the specified username represents an internal account
     * @since 1.4.0
    */
   boolean isInternalAccount(String username);