style: added whitespace

spaces between the ')' and '{' make code a tad easier to read.

Closes #7542
docs(tutorial/index): explain E2E acronym

It was confusing to read "end 2 end" as a numeric two. I kept wondering what two end(s).
Later in the tutorial, the text switched to "End to End" which made more sense than numeric two.
refactor($parse): remove the support of JSON parsing mode

It's a feature that isn't exposed to the public, and is
no longer used internally.
chore(travis/e2e): update protractor to 0.23.1
chore(tests): remote iit that sneaked into ngStyle
chore(grunt): check files in src for ddescribe/iit

Previously, only files in test/ were checked. This does not capture
end to end tests, which are in comments in src/.
docs(tutorial): match html from angular-phonecat in step 7 instructions

Place phoneId binding in a proper HTML node

The code where the phoneId binding in the phone-detail.html template is first explained in step 7
of the tutorial doesn't make it a child of a proper HTML node, which makes the end-to-end test
against the view (also introduced in step 7) fail.

The test acquires the binding right from the view (by.binding('phoneId')), and apparently this
operation fails when the binding is not a child of an HTML node, and therefore the entire test also
fails. As soon as the binding is placed inside a <span></span> tag pair, the binding is found and
the test passes. The code on github for step 7 has it right, the binding is within the span tags,
but in the documentation I'm patching here the span's are missing.

☆.。.：*・゜☆ MERCI ☆.。.：*・゜☆

Closes #7561
fix($parse): remove deprecated promise unwrapping

The feature has been deprecated in #4317

BREAKING CHANGE: promise unwrapping has been removed.
It has been deprecated since 1.2.0-rc.3.

It can no longer be turned on.
Two methods have been removed:
* $parseProvider.unwrapPromises
* $parseProvider.logPromiseWarnings