updated the batch upload form to accept xlsx files

fixes SPOT-633

xlrd was updated to read xlsx files on top of just xls files
yay!
Merge branch 'spot633'
Added License notice to base template file.
Merge branch 'craig'
no longer aborts the entire upload process if one put fails

fixes SPOT-634
Merge branch 'master' of git://github.com/samolds/spacescout_admin into samolds
SPOT-711: Fixed problem with hours on upload/download (for saturday, app dls as 'sa' and for upload expects 's').  Now consistently 's'
Merge branch 'master' of git://github.com/swansong/spotseeker-admin into jswan2
on batch spot PUTs, spot images are no longer touched (POSTed)

fixes SPOT-621
Merge branch 'spot621'
Basic scrolling capability for upload page errors and warnings
Merge branch 'master' into scrollupload
fields with 'auto' as the schema value are uneditable in the admin app

fixes SPOT-636

they will be uneditable in the multiple spot edit page and the single
spot edit page
SPOT-711: Functional fix for overflowing tables of upload errors
Merge branch 'jswan2' into working
refs SPOT-741: added Friday to the list of days both download methods are looking for in the data
Fixes SPOT-741 - adding unit tests for the download/upload methods
Merge branch 'jswan2' into working
Make sure (for now) we're using django 1.4
Merge branch 'master' of github.com:uw-it-aca/spacescout_admin