Fix: mail navigation

[Ipriyankrajai]

Fix: #125

[vercel]

@Ipriyankrajai is attempting to deploy a commit to the Inbox Zero Team on Vercel.

A member of the Team first needs to authorize it.

[Ipriyankrajai]

Fix: #127

[elie222]

This changes README too (and not sure in ways it needs to be changed).

For the bug itself, where does it happen to you? Because it links me to these pages correctly: https://www.getinboxzero.com/mail?type=sent

[Ipriyankrajai]

First go to compose page than then try to go to mail or draft page

[Ipriyankrajai]

By changing readme i tried to Fix: #127

[elie222]

First go to compose page than then try to go to mail or draft page

Ah okay. I actually got rid of compose page now. For multiple changes it would be better to have it as two different PRs

[elie222]

Also about the README, Redis is something you want to set if you're deploying it. Db url is too. So maybe I should make that more clear.