Add a "go home" page to 404 page in Nomad UI

[josegonzalez]

Nomad version

Output from nomad version

Nomad v0.8.6 (ab54ebc+CHANGES)

Operating system and Environment details

vagrant@nomad:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"

Issue

It would be nice if Nomad had a "go home" link on it's 404 pages when it cannot find an allocation. I come up against this frequently when restarting my VM from scratch.

Reproduction steps

1. Create an allocation via a deployment of any job
2. Save the link to the allocation in the ui
3. Clear out your nomad instance
4. Try to browse to the allocation again

[josegonzalez]

Thanks for that, @DingoEatingFuzz :) Small ui enhancements always make users happier :)

[DingoEatingFuzz]

I agree!

[github-actions]

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