#54 upload file prototype status
#54 improve simple solution for file upload
#54 delete unnecessary files and actions
#54 use icon for file uploads too
#54 forms for attachment and task in one column + styling
#54 attachments and stuff in one column 2.0
#54 fix buggy version
Merge branch 'Axolotl' into A/feature/#54

Conflicts:
	Gemfile
	app/assets/stylesheets/tasks.css
	app/views/tasks/_form.html.erb
	app/views/tasks/_tasks_box.html.erb
	app/views/tasks/show.html.erb
	config/locales/en.yml
	config/routes.rb
	db/schema.rb
#54 locales for _form
more locals for _form and show
#54 remove unnecessary (scaffolded) tests
#54 fix tests next try
Merge branch 'Axolotl' into A/feature/#54
#54 improve routing and upload_controller
#54 improve tasks _form
#54 File Upload with paperclip and javascript
- only single upload, no multiple upload
- onchange in _form calls upload function in tasks
- onclick delete button will remove div containing links and asynchronously call destroy on upload

TODOs
- translate button delete which is added with js
- confirm question before deleting upload
- (re)support multiple file upload
- style browse button
Merge branch 'Axolotl' into A/feature/#54
Merge branch 'A/feature/#54' into Axolotl

Conflicts:
	app/views/tasks/_tasks_box.html.erb