Remove casperjs to resolve vulnerability

Remove casperjs to resolve vulnerability (#148)

Project is no longer maintained and will
not be receiving updates/fixes

* Throw error for testE2E

Update npm dependencies

v1.15.5

Update npm dependencies (#147)

Use npm audit fix for vulnerabilities

v1.15.4

Use npm audit fix for vulnerabilities (#143)

Update karma to resolve vulnerability

v1.15.3

Update karma to resolve vulnerability (#141)

Add a check for native angular notify

v1.15.2

Bump version (#140)

Use src folder for coverage reporting

v1.15.1

Use src folder for coverage reporting (#139)

Update gulp version to 4

Update gulp version to 4 (#137)

Return done after server start and stop
Use gulp.series instead of runSequence

Update lodash.template to fix vulnerability

v1.14.2

Attempt to fix lodash.template vulnerability (#136)

Update karma to 5 to fix socket.io vulnerability

v1.14.1

Update karma to 5 to fix socket.io vulnerability (#135)

Dependency and utility updates

Minor dependency and utility updates (#131)

* Use updated multi reporter plugin
* Remove unused and unreferenced dependencies
* Fix gulp version

* Run karma server directly; update karma and dependencies (#132)
* Use chrome for unit tests (#133)
* Update mocha to a more recent version (#134)