use Sardine interface
query report definition as singular
add missing validations
Add javadocs to ProjectService
Merge pull request #19 from martiner/javadocs

Add javadocs to ProjectService
md package tunning
Merge pull request #21 from liry17/dtos

md package tunning
Remove useless TODO comments
tweak gdc and add gdc test
Merge pull request #24 from martiner/gdc

tweak gdc and add gdc test
add jadler integration test for gdc
tweak project and add project test
Merge pull request #25 from martiner/gdc

add jadler integration test for gdc
Merge pull request #26 from liry17/dtos3

tweak project and add project test
list datasets
tune account DTO and add test
tune dataset package
Merge pull request #29 from liry17/dtos4

DTO's tuning of account and dataset packages. Relates to #18
show error messages on failed model update
updated model example