[INTERNAL] lock grunt-eslint version to 2.0.0

grunt-eslint 2.1.0 brings eslint 0.10.x which has breaking changes.
For now, just lock the version to use eslint 0.9.x again.

Change-Id: Ie1abc52ca9810759c6229beca795a01c64994db0
(cherry picked from commit 98f8e6316a9c4dfb0fe89fed439392ede8081b8b)
CR-Id: 012006153200015431152014
[FIX] Popup: Refresh DomRef During Closing

- when the Popup is closed and somehow its content was rerendered (e.g.
due to a destroy of a content element) the DomRef in 'fnClosed' isn't
the same anymore.
- therefore the DomRef has to be refetched and processed accordingly.

BCP: 1482003744
CR-Id: 012006153200015628122014
Change-Id: Iba61b6cbed7f89e9607608d5489cfdc6c3347cac
Merge "[FIX] Popup: Refresh DomRef During Closing" into rel-1.26
Merge "[INTERNAL] lock grunt-eslint version to 2.0.0" into rel-1.26