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);
    }