[BUGFIX beta] Support Handlebars ~> 1.0.

Ember is compatible with Handlebars versions from 1.0.0 forward.
Merge pull request #4316 from rjackson/unlock-handlebars-version

[BUGFIX beta] Support Handlebars ~> 1.0.
[NICETHING beta] prevent value= with input type='select'

Fixes #4319
Merge pull request #4321 from machty/prevent-checkbox-value-dumbletons

[NICETHING beta] prevent value= with input type='select'
[beta] Remove `propertyBraceExpansion` feature flags for 1.4.0.
[beta] Remove `ember-metal-run-bind` feature flags for 1.4.0.
[beta] Remove `with-controller` feature flags for 1.4.0.
[SECURITY CVE-2014-0046] Ensure link-to non-block escapes title.
Add Ember.Handlebars.getEscaped.
Fix simpleBind refactor to use Ember.Handlebars.getEscaped.
[FEATURE ember-handlebars-log-primitives] Enable by default.
[FEATURE ember-routing-inherits-parent-model] Enable by default.
Merge pull request #4327 from stefanpenner/maintain-cp-shape

Maintain cp shape
prevent ComputedProperty shape from changing
[beta] Do not manually install git && bundler.

* Remove manual git installation.  https://github.com/travis-ci/travis-ci/issues/1710
  has been closed, and Travis VM's should now have git 1.8.5.3.

* Bundler 1.5+ is installed by default on Travis now, no need to install
  manually.
[query-params-new] Fix issue where active class was not being applied to parent route

This updates ember with the folliwing PR in router.js

https://github.com/tildeio/router.js/pull/78

The basic gist here is to only check for changes in query paramters that are passed in
to the `isActive` method. Additional query paramters that are active in the current state are
discared. This is because we want parent routes to be active but they were not because the
removal of query parsamters between the two routes caused the `isActive` method to return
`false` in router.js.
Merge pull request #4333 from rjackson/dont-install-git-manually

[beta] Do not manually install git && bundler.
Merge pull request #4334 from raytiley/qp-parent-active

[query-params-new] Fix issue with active class on parent route
Merge pull request #4322 from rjackson/remove-feature-flags

Remove Feature Flags for 1.4.0.
Merge pull request #4326 from rjackson/enable-ember-routing-inherits-parent-model

[FEATURE ember-routing-inherits-parent-model] Enable by default.