Remove unused element

There can only be 1 server form per page, so this was hogging the
resources
Move upload handler logic to data page postback

Because a posted file can't be ajaxy in old browsers, a real post is
required, so
might as well render the results at that time than pay the cost of JS
rendering
Update file import attributes to match actual data

The project data has much gaps.
Remove all projects before loading new ones

Truncate doesn't support transactions
More Furman -> Urban text changes
Merge branch 'master' of github.com:azavea/UrbanInstitute-DCPreservation