Update dashboard language from 'device' to 'node'

[AlEsmail]

Rafey went through and installed on an EC2 instance. He mentioned the 'device' nomenclature is super confusing.
@vpetersson I know some of these are hard to change - let's change the easiest ones first at least?

• this entire page should probably be removed

[vpetersson]

Duplicate. We already got a task in the current sprint for this.