Add tabindex on email and password fields

At the new login page we have the 'I forgot my password' link, so, when I write my email I just
press tab and start typing my password. But the focus is on link and not on the password field.

So, this commit fix that.
Merge pull request #264 from josemarluedke/tabindex

Add tabindex on email and password fields
Merge branch 'master' of github.com:catarse/catarse into 10M_counter
added crowdfunding poll code (which is also temporary)