Ported settings/apps logic to Ember.
Closes #2423

- Created the apps route to fetch apps from server
- Created controller for a single app
- Modified the template of the apps page to use this controller
- Created the Apps model
- Created AppAdapter to use the FixtureAdapter for Ember Data
Fixing typo in navbar
Improve error handling during bootstrap process

Refs #2986
-More thorough promise handling in bootstrap.js
-Catch rejected promises from the bootstrap module and force
 a Grunt failure instead of an erroneous success
-Adjust the bootstrap unit tests

fix
Merge pull request #2993 from jaswilli/issue-2986

Improve error handling during bootstrap process
Fix deletion of Post Model in Editor and Content screens

fixes #2999
- handle undefined argument in openModal function
- catch whether a model is deleted in Editor routes to aid transition
- move updateTags function to the PostModel
- add call to updateTags in delete-post modal
Implement Shortcuts in Ember

Closes #2988, #2752
Ref #1463, #2984,
 # Shortcuts via Keymaster
- Added KeyMaster to bower dependencies. KeyMaster is a minimal keyboard
  shortcuts library.
- Added `ShortcutsRouteMixin` for routes that will use shortcuts.
  Currently, only routes can have shortcuts. See the extensive comment
  at the top of `core/client/mixins/shortcuts-route.js` for a
  description of how to implement shortcuts.

 ## Other Changes
- Injected popover service into ApplicationRoute
- Created `EditorRouteBase` mixin for the `editor.new` and
  `editor.edit` routes to mixin.
- `StyleBodyMixin` now calls `this._super()` on `activate` and
  `deactivate` to play nicely with other mixins.

 ## Shortcuts and Stubs implemented
 #### Application-Wide
- `'esc':'closePopups'` shortcut **stub** to close popovers,
 modals, and notifcations

 #### Editor Shortcuts
- `'ctrl+s, command+s': 'save'` note that `command` is the
  `meta` key.
- `'ctrl+alt+p': 'publish'`
- `'ctrl+alt+z': 'toggleZenMode'`
Merge pull request #3001 from darvelo/fix-delete-post

Fix deletion of Post Model in Editor and Content screens
Convert general settings page to ember data

Issue #2846
-Implement custom RESTAdapter and serializer for settings data.
-Convert theme selector to Ember.Select.
-Finish upload modal and wire into settings page.
User API changes

closes #2822
- added destroy user method
- added remove user permission
- added API end point for get reset token
- added API end point for reset password
- added API end point for change password
Remove limit from ember post API calls

ref #3004

- this is unnecessary and causing bugs
Fix limit parameter

closes #3004
- parseInt for limit parameter
Merge pull request #3006 from sebgie/issue#3004

Fix limit parameter
Functional tests for Ember

issue #2989

- Adds lodash for bind and isNumber - looking for a better solution for this
- Still needs the editor and flow tests porting
- Some of the tests are commented out awaiting further implementations
Merge pull request #2978 from ErisDS/ember-test

[WIP] Functional tests for Ember
Merge pull request #2995 from sebgie/issue#2822

User API changes
Add Validations Layer and Post Validations

closes #2893, issue #2850, issue #2856
- this is a stable, but quick and dirty validations layer for the time constraints
- this could be replaced with a unified server/client layer later. the infrastructure is there.
- create a validation engine mixin to match validators with models
- override the save method in the mixin to perform validations first
- create a post validator
- fixup calls to .save() to make sure they catch errors properly
Merge pull request #3002 from novaugust/shortcuts

Implement Shortcuts in Ember
Improving Casper test error reporting
Merge pull request #3003 from jaswilli/issue-2846-settings

Convert general settings page to ember data
Merge pull request #3011 from darvelo/validations

Add Validations Layer and Post Validations