Basic nav menu CRUD
Present assigned nav menu locations in `wp menu list`
Easier to consolidate this code
Use the nifty sub-sub-command functionality for `wp menu list`
Consolidate Behat tests
List, assign, and remove locations from menus
Ensure `$menu_locations` is always an array
Sneak in `wp term url`, which I need for testing
First pass at CRUD for menu items
Fix position inconsistency
First pass at update support for menu items
`url` is protected in WP-CLI-landia, so let's use `link` instead
Use twentyeleven, which is available in all tested versions
twentyeleven was removed from trunk. Let's try this one more time.
fix wp-cli/wp-cli#1036
Merge pull request #1101 from nyordanov/fix-1036

Fix issue #1036
Command to list registered sidebars
Fix copy pasta
Update `WP_CLI\Utils\load_command()` to handle commands like `sidebar widget`

Previously, `load_command()` only supported commands where the name matched exactly (e.g. `wp post` and `post.php`). The `* meta` commands escaped this by defining their classes within the parent class file.

This change means `wp sidebar widget` will resolve to `sidebar-widget.php`, as well as `sidebar.php`
Introduce `wp sidebar widget` with list, update, and remove