Add attachment model
Fix attachment fixture, make title and url required
add assignee_id to tasks
Add attachments on task edit/new pages
Fix attachments#index test
added event fields and updated form
add done-field to db scheme; add checkboxes for read, update and create; start to build some kind of panel to show tasks as shown in the mockup
Merge branch 'feature/event-create' into dev
fixed error spans
created event templates CRUD basics ref #24
added missing event fields to jsonbuilder
fix association and add dropdown
fix saving user_id
fix layout
add blank instead of prompt
Users can only edit, delete and update their own events
Merge branch 'feature/edit-own-events' into dev
fixed tests
create event from template, template list view
Merge branch 'feature/template-crud' into dev