UI for the submit a paper page

[roo2]

Currently the UI for this page is very basic. This covers implementing a suitable UI for this page.

• [ ] Create a high level design for this page
• [ ] Include a CSS framework such as bootstrap
• [ ] Include a breif explaination of the review process on the page.
• [ ] Link back to homepage
• [ ] Upload field and button styled appropriately
• [ ] Error messages styled appropriately
• [ ] Upload Successful message styled appropriately
• [ ] Message about how peer review will work in future versions if the App