Moving 'Manage your inbox' section to new page

[waseem18]

It would be better if Manage your Inbox: section is move to a different page.

A settings icon will be placed at the right end of row Welcome, Email row which would take the users to the above mentioned page.

This would make the index page look clean.

[kennethreitz]

I like this idea! Want to send a pull request?

[kennethreitz]

/cc @erinxocon

[waseem18]

Yeah! I'll look into this and will send a PR soon!