Moved orcid_id from users table to user_identifiers. Added option_based flag to question_formats. switched Object.const_defined to table_exists checks in db migrations because rails loads references to classes on demand so the objects are likely not defined when the migrations run. safer to check for the underlying table's existence

added checks in migration code where we try to manipulate data belonging to a table that no longer exists in the current codebase

expand migration to work with pg

Merging current stable development branch into master (#23) ...

This is our unofficial v.0.1.0 release. It includes:
- Rails 4.2 migration
- Internationalization
- API
- Institutional logo upload (thanks to Weiwei and the Univ. of Alberta)
- Generic branding
- General cleanup of code and bug fixes

DMPonline4 - RAILS 4.0 (#4) ...

Merging the initial DMPOnline4 codebase into Roadmap

DMPonline4, this code was designed and implemented by the Digital
Curation Centre (DCC)
DMPonline runs in Ruby 2.1 and Rails 4.0, there is a mysql database.