u-prefixed attributes

[koustov]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #31

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [x] Verified that added/modified attribues are properly loading on browsing
• [x] Verified that added/modified attribues editing templates are properly rendered
• [x] Verified the output on changes
• [x] Verified the deployment

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas. If applicable.
• [x] I have made corresponding changes to the documentation. If applicable.
• [x] My changes generate no new warnings

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