Account view updates (#4008)

* Fix null account render issue, add tests

* Add tests for #3999 fix (merged in #4000)

* Only include sinon-as-promised globally for mocha

* Move transactions state into tested store

* Add esjify for mocha + ejs (cherry-picked)

* Extract store state into store, test it

* Use address (as per PR comments)

* Fix failing test after master merge