Add POST /tickets endpoint
Include customer in POST /tickets response
Add web interface for creating and viewing tickets
Merge pull request #106 from nubedianGmbH/106-tickets-endpoint

Add a tickets endpoint which lets users submit tickets
First offering importer stub
Move offering import to separate view

Add specs for it
Merge pull request #83 from nubedianGmbH/83-offering-import-from-xls

Write importer for offerings
Depend on domain models in interactors

Makes test setup easier and avoids objects going out of sync.
Save several offerings for one order
Add several offerings to chose from to new orders page
Remove Order#menu
Remove Order#offering
Add icons to tours page which indicate delivered and loaded status
Fix dashboard
Move date for order into CreateOrder interactor
Merge pull request #114 from nubedianGmbH/order-with-many-offerings

Implement order with many offerings
Add /me API endpoint

This endpoint returns the currently logged in user and the associated customer.
Remove unused spec setup.
Add note to customer

* Add note to tour/:id JSON response
* Add note field to form
* Add note to customer details
Add telephone number to API tour response