A small filter to make sure the instagram oembeds work.

Now we can use the oembed-codes in the posts. (It's a bit pointless, though.)
Refactored instagramy_goodness_create_simple_post to be able to switch the date check.
Show a preview and add a "post now" button.
Revert "A small filter to make sure the instagram oembeds work."

This reverts commit 829028986723e3657f8edb69730cf15b64c7018e.
Merge branch 'feature/imagelist' into develop
Messages, Version set to 0.2
Post button
Tested up until 3.9.1
Merge branch 'release/0.2'