Make cz.js debuggable in developer tools
Merge pull request #500 from javierluraschi/MakeCzJsDebuggable

Make cz.js debuggable in developer tools
Fix #482: Incorrect validation fires when creating a timelines
Merge pull request #507 from javierluraschi/Fix482Validation

Fix #482: Incorrect validation fires when creating a timelines
[Bugfix] Bug #434, #436.

Details:
1. Bug #434. Authoring: User is able to create exhibit Cosmos outside.
2. Bug #436. Authoring: Missing Exhibit time range check (or correction).