Updated application version to match the one found on package.json.
Fixed some comments.
Wrapped directives into angular dependency injection array handlers.
Refactored services.js to comment out the code.
Appended core services to the main AngularJS app, not a sub-module.
Commented out filters.js file.
Appended core filters to the main AngularJS app, not a sub-module.
Improved 'keys' filter documentation and code.
Removed deprecated filter 'interpolate', as it's goal seems to now be achieved by using the 'version' directive.