Not checking validations on attachments save for paperclip 4.0

- In the new version of paperclip content spoofing validation interferes with uploading whatever you want
- Additionally added I18n translation and call to required paperclip validation
- Adding arel and tzinfo because they were expected to resolve some dependency
Merge pull request #313 from ninjapanzer/ninjapanzer/fix_s3_paperclip

Issues with S3 and new version of Paperclip validations
update gem dependencies closes #310
Merge pull request #316 from cleblanc87/kandan-310

update gem dependencies closes #310
Update DEPLOY.md and need for compiler/make
unit test cleanup
fixing script order for travis
A more SSL friendly Kandan.

The MusicPlayer, VimeoEmbed and YouTubeEmbed plugins are now protocol
agnostic and will work with SSL/non-SSL Kandan install.

The standard Gravatar address in kandan_settings.yml now defaults to the
SSL Gravatar address.

Closes #322.
Merge pull request #323 from gaelian/kandan-322

A more SSL friendly Kandan.
Design fixes for base Kandan app
DEPLOY.md needs a few more tweaks before it can be setup on Heroku
Fixed current user list not being updated when user logs in
Merge pull request #324 from scouttyg/bootstrap-design-tweaks

Design fixes for base Kandan app
Merge pull request #325 from scouttyg/heroku-deploy

DEPLOY.md needs a few more tweaks before it can be setup on Heroku
Merge pull request #326 from scouttyg/kandan-270

Fixed current user list not being updated when user logs in
Merge pull request #320 from ngoyal/master

Update DEPLOY.md and need for compiler/make