* replace `isEditing` observers with `didReceiveAttrs` hook
* 🐛 Fix HTML card not launching in edit mode
closes https://github.com/TryGhost/Ghost/issues/8310
- adds `autofocus=true` attribute to `gh-cm-editor` that will use CodeMirror's built-in autofocus behaviour
- set HTML card's launch mode to `edit` and ensure that the `autofocus` attribute is passed
- refactor `gh-cm-editor` for more robust event handling
- re-work `ch-cm-editor` tests to take into account CMs events not being triggered within a single run-loop and to still work when the browser window isn't focused (should fix the random test failures on Travis and the issues where the CM tests will fail locally)
no issue
- switch `jscs` and `jshint` inline config to `eslint` config
- fix eslint errors, predominantly in tests where the config now the main app config more closely
refs #5845
- Updates tag settings screen to match content screen behaviour. Each now tag has it's own route that is link-able from other areas of the app
- Updates a number of places where jQuery event handler code was not wrapped in Ember's run loop
