Use ActionManager to register in-template actions
[BUGFIX beta] sync router.js, add catch/finally to Transition

Closes #4579
Merge pull request #5343 from machty/router-sync-catch-finally

[BUGFIX beta] sync router.js, add catch/finally to Transition
[DOC] Fix typo and missing word in comments
Merge pull request #5345 from jcollins1991/fix_comments

[DOC] Fix typo and missing word in comments
[BUGFIX beta] Fixes issue - class given as unconditional binding to view
not applied.
Merge pull request #5344 from hyderali/bugfix-view-helper

[BUGFIX beta] Fixes issue - class given as unconditional binding to view not applied.
[DOC release] Update binding.js

* Changes one of the code examples to use a more correct representation of what
  the `.from` property is actually expecting.
* Adds a couple examples to help clarify that bindings may be set between
  objects using this method, and not just inside the object passed to `connect`.
[BUGFIX beta] Use already declared `trim` instead of `jQuery.trim`
Merge pull request #5342 from mmun/action-manager

Use ActionManager to register in-template actions
Remove deprecated action lookup as methods on controller.

The older lookup in the root of the controller has been deprecated
since late-2013, and is a frequent cause of annoyance for newcomers.
This PR removes the deprecated lookup completely.

This has been discussed with the full core team.
Pass index into computed array callbacks
Merge pull request #5347 from rwjblue/remove-deprecated-controller-action-support

Remove deprecated action lookup as methods on controller.
Unify observer/observes implementation

This is similar to the implementation of FunctionPrototype.property /
Ember.computed.  Now when the Ember.observer function is modified the
function prototype will already of the correct behavior.
Merge pull request #4821 from rondale-sc/unify_observer_observes_implementation

Unify observer/observes implementation
Cache length in observesBefore for loop
Use one variable assignment per declaration.
[FEATURE ember-handlebars-compiler-ast-to-precompile] Allow precompile to accept an already existing Handlebars AST

[FEATURE pass-ast-to-precompile] Adding feature flags

[FEATURE pass-ast-to-precompile] Changing flag name
[BUGFIX] fillIn helper should take context into consideration
Merge pull request #5352 from teddyzeenny/fix-fillin

[BUGFIX] fillIn helper should take context into consideration