Page title doesn't update on some pages

[huonw]

These all just have Cargo for the page title, at the time of writing:

• https://crates.io/crates
• https://crates.io/keywords
• https://crates.io/keywords/math
• https://crates.io/dashboard
• https://crates.io/me
• https://crates.io/me/crates

(#89 fixed crate pages.)

[pimterry]

I'm going to fix this, probably later today. I'm thinking along the lines of the below, any objections?

https://crates.io/crates - 'Crates - Cargo'
https://crates.io/keywords - 'Keywords - Cargo'
https://crates.io/keywords/math - 'Math - Keywords - Cargo'
https://crates.io/dashboard - 'Dashboard - Cargo'
https://crates.io/me - 'Settings - Cargo'
https://crates.io/me/crates 'My Crates - Cargo'

[alexcrichton]

@pimterry sounds good to me!

[carols10cents]

This looks like it was fixed by #423 but just didn't get closed automatically.