chore: More refactoring
chore: More tests and refactors
fix: Fixed age not getting calculated properly
chore: Implemented mocking in jest
chore: More mock tests
chore: checkStuckScreen tests
fix: don't prepend '+' when using a friendly name with Twilio
fix: consider that the phone number may contain whitespaces
fix: removed duplicated import on accounts.js
fix: replaced isNan with lodash's _.isNumber
fix: _isNumber logic was inverted
