Migrate the parser test suite from AngularDart to Angular 2

[naomiblack]

Before starting on this, revisit whether we need to full test suite for benchmark proof of concept or not. May need to break this into subtasks.

[EisenbergEffect]

I'm not sure how much has changed since, but the expressionist repo has a port of the AngularDart expression parser and tests. I did that work a number of months ago though. It may be out of date, but maybe we can leverage it?

[naomiblack]

Can't start on this until #29 is done. May need to break this into sub-tasks. Revisit.

[naomiblack]

@vsavkin assigning to you along with parser work. Please update.

[vsavkin]

I've migrated the tests while porting the parser.

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