Added External account type to enum

src/main/java/com/gitblit/Constants.java

diff --git a/src/main/java/com/gitblit/Constants.java b/src/main/java/com/gitblit/Constants.java
index f3ad5fa..aa3767c 100644
--- a/src/main/java/com/gitblit/Constants.java
+++ b/src/main/java/com/gitblit/Constants.java
@@ -480,7 +480,7 @@
 	}

 	

 	public static enum AccountType {

-		LOCAL, LDAP, REDMINE, SALESFORCE, WINDOWS;

+		LOCAL, EXTERNAL, LDAP, REDMINE, SALESFORCE, WINDOWS;

 		

 		public boolean isLocal() {

 			return this == LOCAL;