small fix so import doesn't break if django-custom-fields not installed
Merge pull request #7 from matthiaswh/master

Simple fix so import doesn't break if not using django-custom-fields
Thanks for the patch!
Fixed #9
Added ValueError friendlier handling
Merge branch 'master' of https://github.com/burke-software/django-simple-import
Better error message
Fixed #8
Removed Match Relation blank mapping, which isn't useful.
Often there is only one option anyway.
Update README.md
Update README.md
Issue #10
Partial fix. Removes extra blank columns from ods files.
With import only, allow user to not import required fields
Fixed #11
Fixed issue when header row is blank. We will now ignore them.
Added header_position row as a hack to get the queryset in the
right order based on the current file being imported
It will break if the same user is importing different but spreadsheets
of the same model at the same time. Seems unlikely.
Fixed #13
Added choices lookup
Update README.md
Update README.md
Fixed issue where not using import columns would result in confusing
error.
Merge branch 'master' of https://github.com/burke-software/django-simple-import
Issue #14. Added Set Password when importing user.
Fixed issue where set password would error out
Fixed issue where mixing upper and lower case in spreadsheet
header rows could cause problems