Refactor deployment view button & stop button

Follow-up from "Update information and button text for deployment footer"

The following discussion from !18918 (merged) should be addressed:

• @iamphill started a discussion:

  Any reason this v-else can't be on the review-app-link?

  & I wonder if we do this would it allow us to get rid of the extra <span>?

Also: !18918 (comment 253432782), !18918 (comment 253432783), !18918 (comment 253432784)