Remove importers and exporters
[gem] Add thinreports-rails
Refactor install_generator
Remove importers
[models] Move import_file to gaku_imex
Fix dependencies and clean
Clean core/Rakefile
Fix travis
[spec] Require shoulda-matchers in spec_helper
Merge pull request #228 from Genshin/remove_imex

Remove imex
Improve admin/disposals_controller
Create Disposal model and use it in admin/disposals_controller
Refactor gaku/versioning/student_version
Get rid of all deprecation warnings
Merge pull request #229 from joneslee85/patch1

Get rid of all deprecation warnings
Minor refatoring for find_by()
fixed/updated guard
updated guardfile and added missing gem
Merge pull request #234 from Genshin/guard

Guard
Refactor validation presence