feat(tasks) - add backend support for tasks. SD-639, SD-399
Merge pull request #224 from petrjasek/master

feat(archive): implement autosave api
Merge pull request #223 from amagdas/tasks

feat(tasks) - add backend support for tasks. SD-639, SD-399
Use BaseModel.rel where needed
Use string type only when needed.
Merge pull request #225 from amagdas/tasks-cont

Use BaseModel.rel where needed
SD-556 test for edit a view
fix(tests): fix header date format to match rfc1123