Merge pull for Issue #588, user DatabaseHelper.getDao instead of DaoManager.createDao()

Modify @OrmLite to use database helper to get dao, so generate code will look like:

        private DatabaseHelper helper_;
...
...
        helper_ = OpenHelperManager.getHelper(this, DatabaseHelper.class);
        try {
            clickCountDao = helper_.getDao(ClickCount.class);
        } catch (SQLException e) {
            Log.e("MyActivity_", "Could not create DAO clickCountDao", e);
        }