Add date selector to project creator
Add date picker to image uploading

Added the date picker to image uploading, viewing and editing
Add date picker to document upload
Add date picker to interview

Added the date picker to interview uploader and changed how the
interview date is displayed on the interview page. Used to be taken
from the transcript, now it uses DCT_CREATED on the interview object.
Merge pull request #13 from cmcnamara87/date-selection-widget

Date selection widget