renamed split_select_multiples to all upper
field delimiters
infinitely nested xls export without pandas
removed generate_zip_csv_export def and merged with global generate_export
added a check for request NOT to split select multiples
update parent table names when a different name is generated to keep it valid for xls(x)
Fixed select multiples to expect space sep. not comma sep.; renamed extra fields to match our current names;
fixed tests
Merge pull request #1145 from modilabs/pandaless_export

XLS export without using pandas
for s3 export downloads, redirect to s3 url. For large exports, they will not be affected by nginx timeouts
Merge pull request #1148 from modilabs/exports_redirect_s3

for s3 export downloads, redirect to s3 url.
Update README.rst
report export exceptions to mail-admins
XFormParser is already in odk_viewer/models/xform_parser.py
a little more info for export exceptions
Merge pull request #1151 from modilabs/report_exception_in_zip_exports

Email admins exception in exports
pin elaphe==0.5.3
Use # to indicate they need to be run as root or with sudo command
catch HTTP errors thrown by stathat api and report to admins - fixes #1152
Removed ipdb call