Since 07cc454 (ie the switch to Meteor 1.2) we includes the `es5-shim`
polyfill to support methods like `Array.prototype.forEach` in a
consistent way across all supported browsers (IE8+).
MDG recently released a blog post recommending the use of these native
methods instead of underscore [0]. We know follow this recommendation.
This commit also favor some ES6 features (argument defaults,
destructing assignment) in places where we didn’t use them.
[0]: http://info.meteor.com/blog/es2015-get-started
Replace the old (and broken) jshint + jscsrc by eslint and configure
it to support some of the ES6 features.
The command `eslint` currently has one error which is a bug that was
discovered by its static analysis and should be fixed (usage of a
dead object).
The UI and the internal APIs are still rough around the edges but the
feature is basically working. You can now select multiple cards and
move them together or (un|)assign them a label.
The new EscapeActions object decide what to do when the user press the
Escape key (such as closing a opened popup or inlined form).
This commit also re-introduced the sidebar current view as a sidebar
component local state.
