Merges branch 'release/0.8.2' into develop
Updates encase php
Adds Ajax Packager and tests.
Moved to Arrow\Asset namespace with packager
Updates ignores
Reorganizes Options.

* Removed Duplication in Options, removed old admin-post style.
* Implemented Packagers for Ajax & Options.
* Made the OptionsPage independent of frontend framework
* Currently using Ember, PluginMeta can override that completely.
* Simpler inclusion of support scripts into OptionsPage.
Merges branch 'feature/reorganize-options' into develop
Improves Ajax Controller Tests
Improves Ajax & Tests
Improved asset tests
Improved Options & Tests
Improves Test Coverage
Fixed typos
Adds scrutinizer config.
Removes dead code
Removes code sniffer
Adds dist folder.
Refactored TwigHelper into Twig namespace.

* Now using Encase.
* Simplified design, Packager setups up the Twig environment.
* Much more customizable.
* The CliPackager uses this flexibility to setup a Twig Environment for
  compiling templates via the `twig_compile` cli.
Merges branch 'feature/reorganize-twig-helper' into develop
Localized scrutinizer.