Added public updates which show up in the show view for a need. The _form for updates has a nested form to show the images associated with it but there is no add/remove functionality for those images in that form.
Added ability to add and remove image objects. Issues with those nested image objects saving properly when they have an attached image.
Fixed issue where images wouldn't upload.
Added modal to show the public update and it's images.
Merge pull request #72 from zachwhelchel/add_public_updates

add_public_updates