ac2 - Added SyncOutput to wrap the http servlet response

...trol-Server/src/ca/nrc/cadc/ac/server/web/SyncOutput.java

...ca/nrc/cadc/ac/server/web/groups/AbstractGroupAction.java

...c/ca/nrc/cadc/ac/server/web/groups/CreateGroupAction.java

.../src/ca/nrc/cadc/ac/server/web/groups/GetGroupAction.java

...ca/nrc/cadc/ac/server/web/groups/GetGroupNamesAction.java

...er/src/ca/nrc/cadc/ac/server/web/groups/GroupServlet.java

...c/ca/nrc/cadc/ac/server/web/groups/ModifyGroupAction.java

...c/ca/nrc/cadc/ac/server/web/users/AbstractUserAction.java

...src/ca/nrc/cadc/ac/server/web/users/CreateUserAction.java

...rver/src/ca/nrc/cadc/ac/server/web/users/UserServlet.java

...rc/ca/nrc/cadc/ac/server/web/users/GetUserActionTest.java

...a/nrc/cadc/ac/server/web/users/GetUserListActionTest.java

...ca/nrc/cadc/ac/server/web/users/ModifyUserActionTest.java