Fix translate problem on dashboard panel

Some pages in dashboard panel are not translated, because the character "&" in page names are escaped before translate.

Before
![concrete5_7 ____](https://cloud.githubusercontent.com/assets/514294/4321427/f68bf64a-3f3f-11e4-9b83-114cffe7f3af.png)

After
![concrete5_7 ____ 1](https://cloud.githubusercontent.com/assets/514294/4321426/f683d30c-3f3f-11e4-9f29-986e16ff30ff.png)

Thanks to bug report from... @ounziw @acliss19xx