Implement the Plant Details page

[mrbarbasa]

• [x] Add an image carousel/slider that goes from left to right (since there will be multiple images for a single plant species).
• [x] The picture that the user just took should be the first image in the carousel or above the carousel (really not sure about this one; we just need a good way to compare the user's image to existing images).
• [x] The Home page (list of plants) and Identifier Results page both link to the Plant Details page. So the Plant Details page will have different logic depending on what linked to it.

[spjy]

Design is complete unless others have feedback. Just need to hook into database now, waiting on #39.