* add new codemirror helpers
* adding json helpers to the secret pages
* mark the edit button / link as the edit element instead of the json toggle
* add acceptance tests for JSON editing
* add versions routes
* move commands and permissions check to stand-alone menu component
* add versions template
* make list-item component more flexible and use hasMenu to optionally render the menu
* move current check next to the version
* fix linting
* remove is-wide from secret list popup
* use lazyCapabilities macro in models
* use expandAttributeMeta and fieldToAttrs everywhere
* add angle bracket component polyfill
* use PageHeader component throughout