Move static strings to locales file

[pgwillia]

Is your feature request related to a problem? Please describe.
When writing tests or changing the language used on the interface it would be more efficient and a better practice to store these strings in a locales file. This would also make it easier to translate the application if the need arises.

Describe the solution you'd like

• scan for hard-coded strings and move them to the i18n yaml file

#1729
#1280