Re-vamped Instagram grid

We've give the Instagram grid feature a big overhaul and re-built it from scratch to make it more reliable and much easier to use.

Here's what's changed:

• When you drag an image onto the grid it drops straight away, no need to edit the post first

• uses the new post editor when clicking into posts

• lock posts in place with the "lock" feature

• bulk actions: select posts to change the status, delete, or lock/unlock