#602 | Initial allowances page

[ezra-sg]

Fixes #602

Description

This PR adds the page and control elements for allowances

Test scenarios

• git fetch --all && git checkout 602-allowances-layout && yarn dev
• go to http://localhost:8081
• log in
  • you should see a new allowances menu item
• go to allowances page
  • it should match the designs (some text has been changed)

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have cleaned up the code in the areas my change touches
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings
• I have removed any unnecessary console messages
• I have included all english text to the translation file and/or created a new issue with the required translations for the currently supported languages
• I have tested for mobile functionality and responsiveness
• I have added appropriate test coverage

[Viterbo]

This is coming good 👍
Approved!