test: containerized Chrome end-to-end harness that drives the real popup (closes #181)

Runs the real popup in a pinned containerized Chrome and fails on any uncaught
page error or console.error. Also fixes the two defects it caught: the missing
showView import in addToken.js and the missing addressDotHtml import in
transactionDetail.js.

closes #150
closes #151

src/popup/views/transactionDetail.js

@@ -7,6 +7,7 @@ const {
     showFlash,
     flashCopyFeedback,
     addressTitle,
+    addressDotHtml,
     escapeHtml,
     isoDate,
     timeAgo,