cancel buttons added to get back to the previous screens
de_DE translations added
index data type
Merge pull request #8 from Remo/index-data-type

index data type
Merge pull request #6 from Remo/translations

de_DE translations added
Merge pull request #7 from Remo/minor-ui-fixes

cancel buttons added to get back to the previous screens
Update README.md
Merge pull request #9 from KorvinSzanto/patch-1

Update README.md
more consistent behavior with collection, file and user attribute categories
we have to reference the current object, not the AttributeKey
Merge pull request #13 from Remo/set-attribute-string

more consistent behavior with for setAttribute
Change Data::setAttribute() to take short handle

Have `Data::setAttribute()` take in sort handle ex `brand` as opposed to
`data_car_brand` by adding the data and data type prefix