[FEATURE query-params-new] Fix model inheritance for qps

Closes #4735
[Bugfix beta] [Fixes #4396] Controller#model is external API

The content property is now for downstream consumption
and should merely be an alias of model.
[bugfix beta] [fixes #4342] ensure controllers instantiated by the render helper are torn down
[BUGFIX] Fix wrong view keyword in a component block

Close #3520

Signed-off-by: Kris Selden <kris.selden@gmail.com>
[query-params-new] Fix failure when using QP array values
Merge pull request #4528 from andrei1089/fix_qp_array_values

[query-params-new] Fix failure when using QP array values
Merge pull request #4795 from machty/qp-inherit

[FEATURE query-params-new] Fix model inheritance for qps
[BUGFIX beta] Fix various issues related to ES6 import correctness.

* Remove duplicate imports.
* Ensure that modules do not declare variables with names matching local imports.

These things are currently allowed by the es6-module-transpiler but not by the ES6 spec.
Merge pull request #4725 from emberjs/model-content-consistency

[Bugfix beta] [Fixes #4396] Controller#model is primary, content is now ...
Merge pull request #4742 from stefanpenner/fix-render-with-extra-context-leak

[bugfix beta] [fixes #4342] ensure controllers instantiated by the rende...
Fix broken build due to unstubbed query params

For Stefan Penner.

/cc @rjackson
Merge pull request #4823 from eventualbuddha/es6-fixes

[BUGFIX beta] Fix various issues related to ES6 import correctness.
Merge pull request #4818 from krisselden/fix-view-keyword

[BUGFIX] Fix wrong view keyword in a component block
Fix JSHint issues.
Merge pull request #4835 from rjackson/jshint-errors

Fix JSHint issues.
[DOC Beta] Document the route's controller property
Merge pull request #4841 from bmac/this-controller

[DOC Beta] Document the route's controller property
[DOC release] Fix isFulfilled PromiseProxyMixin doc 

Fixes #4842. Spelling mistake. Changes isFullfilled to isFulfilled in the description/documentation
Merge pull request #4845 from JulianLeviston/patch-1

[DOC release] Fix isFulfilled PromiseProxyMixin doc
[BUGFIX] Fix grouped view when using `#each foo in bar`