fixed issue with policy check when saving changes to a plans export settings

added json response back to the settings/projects controller. This just returns the list of selected and available columns for the user's preferences

added authorization to settings/plans and settings/projects

removed json responces from settings/plans and settings/projects controllers

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.