OPAL-1928: Support edition of categories of views variable
OPAL-1981: Resolved issue by recreating a dto to save
OPAL-1981: Resolved issue by recreating a dto to save
OPAL-1931: Variable Properties editor modal window
OPAL-1931: Variable Properties editor modal window
Cleaning up som GWT.log
Merge pull request #274 from emorency/feature/OPAL-1928-categories-edit-ui

OPAL-1981 & OPAL-1931: Properties edition UI and Fixing error with Categories edition