Display unique devices and if they're iOS or Android

[gwynndp]

Description

Display the device identifiers for both admin and org accounts and make sure there aren't duplicates

Issue(s) addressed

• Resolves #Remove duplicate Device Identifiers in Grower Detail #146

What kind of change(s) does this PR introduce?

• Enhancement
• Bug fix

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Comments were added to explain the device manufacturers displayed

Issue

What is the current behavior?

• devices aren't displaying for org account
• duplicate devices are displaying for the admin account

What is the new behavior?

• unique devices are displayed for both admin and org accounts

Other useful information

• This PR relates to an update to the admin-api PR #Add device manufacturer to planter registration data treetracker-admin-api#613