Fix Traceur's Default template literal test.
Also replace all ocurrences of "template string" to "template literal".
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=72099377
Treat "arguments" like "this" in arrow functions.

As per spec, arrow functions don't capture the arguments array,
so we must transpile references to it.
See:
https://people.mozilla.org/~jorendorff/es6-draft.html#sec-arrow-function-definitions-runtime-semantics-evaluation
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=72099860