CredmanPresentationActivity updates to use showPresentmentFlow

[dritan-x]

• Removal of unused functions in CredmanPresentationActivity whose functionality is provided from the Presentment Flow
• Minor refactor in PresentationActivity for how Logger uses the exception object

test: ./gradlew test - all unit tests pass

[davidz25]

Also please squash commits together (and update the commit message) and force-push