RAML Repository understands directories.
RamlRepository broadcasts file events.

This was originally being done by the file list, but that is being
removed.
Remove file list, rely on home directory now.
Merge branch 'file_browser_bar' into chores/raml-repository-fully-supports-folders-60341750

Conflicts:
	app/scripts/controllers/raml-editor-main.js
	app/scripts/services/raml-repository.js
Merge branch 'file_browser_bar' into chores/raml-repository-fully-supports-folders-60341750

Conflicts:
	app/scripts/services/raml-editor-file-list.js
	app/scripts/services/raml-editor-filename-prompt.js
	app/scripts/services/raml-repository.js