replaced hard-coded admin url, removed future from url (the future is now), closes #110
Fixes #54
Moved wrapping the string into a file-like iterable inside UnicodeCSVWriter
Fixes #90.  Also implements a piece of #108 (making fields readonly)
Merge pull request #118 from gwu-libraries/t110-replace-hard-coded-urls

replaced hard-coded admin url, removed future from url (the future is no...
Merge branch 'master' into t54-stream-csv-export
Merge pull request #123 from gwu-libraries/t90-adduser-validation

Fixes #90.  Also implements a piece of #108 (making fields readonly)
Merge branch 'master' into t65-daily-timeline-report
Added TwitterUserTimeLineErrors for case where twitter user has no uid; and for error getting api connection.  Renamed migration script from 0022 to 0023 to avoid conflict with 0022 script recently merged in as part of pull request #123.