Allow adding users who are missing a preferred_email

If the user account has not yet selected a preferred_email value then
the user completion uses "Full Name (ID)" as the value we suggest for
addition to the change or group.  Instead of failing to find the user
we now parse the ID component and honor it.

Bug: issue 152
Change-Id: I72dbaef4a2b8a8bff7e5d5a8fbb65203c64b5127
Signed-off-by: Shawn O. Pearce <sop@google.com>

gerrit-server/src/main/java/com/google/gerrit/server/account/AccountResolver.java

@@ -23,6 +23,8 @@ import com.google.inject.Provider;
 
 import java.util.List;
 import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 public class AccountResolver {
   private final Realm realm;
@@ -49,6 +51,11 @@ public class AccountResolver {
    *         there are multiple candidates.
    */
   public Account find(final String nameOrEmail) throws OrmException {
+    Matcher m = Pattern.compile("^.* \\(([1-9][0-9]*)\\)$").matcher(nameOrEmail);
+    if (m.matches()) {
+      return byId.get(Account.Id.parse(m.group(1))).getAccount();
+    }
+
     if (nameOrEmail.matches("^[1-9][0-9]*$")) {
       return byId.get(Account.Id.parse(nameOrEmail)).getAccount();
     }