#1763 adding new fields
#1763 new Structure properties
#1763 upgrade task completed
#1763 added to tasklocator
#1763 some UI to choose date fields on structure editing
#1763 finished UI validation and save to DB
#1763 handling pub/exp dates when saving/reading contentlets
#1763 working on some unit testing
fixes #1751
Merge pull request #1786 from dotCMS/issue-1751-Copy/Paste-folders-file-assets-raising-errors-in-console

fixes #1751
Merge branch 'master' of github.com:dotCMS/dotCMS into issue-1763-timemachine-future
#1763 unit test written
#1710
Merge pull request #1789 from dotCMS/issue-1710-errors-in-console-after-copied-Host

#1710
fixes #1735
Merge pull request #1796 from dotCMS/issue-1735-PhotoGalleryMacro-does-not-display-Subfolders-properly

fixes #1735
fixes #1798
#1763 test passing at last
#1774
Merge pull request #1800 from dotCMS/issue-1774-error-saving-tag-when-two-different-host-share-common-tag-repo

#1774