docs(guide): update directive guide to not imply ngView is part of core
docs(guide): update compiler guide with minor grammatical fixes

Minor changes to grammar. Changed sentence "But the declarative language
is also limited, since it does not allow you to teach the browser new syntax."
to now read "However, the declarative language is also limited, as it does not
allow you to teach the browser new syntax."
However is a less informal start to a sentence, and replacing "since"
correctly references extent/degree rather than comparison of time.
refactor($parse): change 'this' to a $parse keyword instead of scope field

BREAKING CHANGE:
- $scope['this'] no longer exits on the $scope object
- $parse-ed expressions no longer allow chaining 'this' such as this['this'] or $parent['this']
- 'this' in $parse-ed expressions can no longer be overriden, if a variable named 'this' is put on the scope it must be accessed using this['this']

Closes #9105
perf($rootScope): moving internal queues out of the Scope instances

Closes #9071