Fixed missing button when statement change

I am not sure if this bug has been found, but when a user changes "I am" to "We are" on the statement page and click Save, the "Members" button is missing and appears only on page reload:

![missing_button](https://cloud.githubusercontent.com/assets/592286/3077913/a1bc91ba-e44a-11e3-977b-18eec5c263e6.png)

The opposite problem appears when you change "We are" to "I am", while changes are saved the "Members" button is still there:

![wrong_button](https://cloud.githubusercontent.com/assets/592286/3077923/ec78f5d6-e44a-11e3-8762-5e206384b2a2.png)
Both problems were fixed in this PR.