Cleanup for branch `miecd_vietnam_branch`

[FrankApiyo]

• [x] Show ripple loader only when data has not been fetched and not when the length of smsData from the superset slice is 0

• [x] Make sure the tests pass

• [x] name variables in the sms_events.ts and the LogFace component better

• [x] Remove use of magic strings and add them to constants

• [x] Remove literals(e.g. strings literals and numbers) such that ones that could be passed as props are passed as props and ones that could be constants are made to be constants

• [x] Finally, maybe remove warnings logged by the test runner

• [x] Add pregnancy analysis iframe url to .env

[FrankApiyo]

• [ ] Finally, maybe remove warnings logged by the test runner has been moved to a new issue: --> #64

[FrankApiyo]

• [ ] Write more tests to get a better code coverage for both this branch (miecd_vietnam_branch_refactor) and branch miecd_vietnam_branch has been moved to--> #65