Properly test mail delivery
Add from field to comment notification mail
Set default for comment notifications to true

This also sets it to true for all users
Usability fix: Redirect to libraries page when deleting library element
Merge branch 'master' into develop
Use string interpolation for mail view

This avoids NilClass errors
Merge pull request #979 from BiteKollektiv/set-comment-notifications-defaults

Set default for comment notifications to true instead of false
Merge pull request #978 from BiteKollektiv/add-comments-mailer

Possible fix for failing comment notification mails
fix last pull request merges and refactor email defaults
another fix for comment mailer
HOTFIX - error notice styling
Merge branch 'master' into develop
Merge branch 'develop' into feature-cart

Conflicts:
	app/mailers/article_mailer.rb
	app/mailers/business_transaction_mailer.rb
	db/schema.rb