Ensure multiple instances of attributes_table_for alternate columns properly

When there are more than one attributes_table_for being rendered with an
odd number of records, the column alternation becomes out of sync. Now the
alternation cycle is reset each time.

![image](https://f.cloud.github.com/assets/25094/1367563/5ba73f00-3940-11e3-89cc-4611e2fd232f.png)