Merge dependency updates into a local branch to test before considering merging into master

[strinsberg]

This merge is from my fork for working on the major changes of updating project dependencies. It is not necessarily ready to be merged into the master branch yet. I need to ensure that it works on the SybilLab GitHub and can easily be transitioned to by other users before we consider merging into master.

Fixes #525 #514 #515

Overview of changes

• Rebuilt project using @vue/cli to handle more of the dependencies
• Only added dependencies back that were absolutely necessary. We may find some are missing, but we can add them as needed. Also, using the @vue/cli client moves a lot of the vue and webpack management into @vue/cli plugins or the tool itself. This reduces the number of things we are responsible for dealing with.
• Added the new GitHub CI action for running tests on the project.
• Updated unit tests to use Jest. This broke a few tests, but most are still intact. Only some of the assertion method names had to change in most cases. Jest is easily setup and integrated with the @vue/cli client and has the power for mocking/stubbing etc. built into it reducing the number of dependencies we need to add for those things. Jest also does coverage, but it is not yet integrated with the coveralls plugin that was used with the previous builds.

Reviewer: @strinsberg