E2E Tests for RefApp 3.x: Sprint 1

Fixed the failing test of RefApp 3.X clinical visit workflow.

Failing reason - There are some changes in the current user interface in the allergy section and it’s not fit with the test scenario.

Approach - Renamed the id selectors to fit with the current user interface.

Ticket - https://issues.openmrs.org/browse/RATEST-245

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