Defect/date picker

The date picker widget is appended at the end of the DOM and therefore does not bubble up from the filter panel.  Clicking a date when inside of the filter panel caused the filter panel to close.

BindToggleVisibilty was removed from the grid filters so clicking away from the filters does not close the filter panel.

https://www.pivotaltracker.com/story/show/57299048

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__General Requirements__
- [x] Pull Request contains full description of changes
- [x] Link to the Pivotal Tracker story
- [x] Pivotal Tracker story has a reference to this Pull Request
- [x] Rebased against latest master branch
- [x] All comments from code review have been addressed
- [x] There are no `-1` code reviews (can only be overridden by Kyle)

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__Coding Standards__
- [x] Style guidelines are followed, code has been formatted
- [x] Code follows idiomatic language paradigms

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__Testing__
- [x] Test coverage has not decreased
- [x] There is no performance degradation
- [x] All appropriate automated tests are present
- [x] Appropriate seed data exists


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__Documentation__
- [x] Major design decisions have been documented on the wiki
- [x] Deployment impact (changes required for new services, configuration, etc.)
- [x] documentation links from Pull Request

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__UI/UX__
- [x] applicable (UI/UX has been changed)
- [x] reviewed for usability and design
- [x] functions on 1024*768 browser size
- [x] works on IE8

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__Defect__
- [x] Feature or defect resolution has been manually tested and meets all requirements of the underlying story
- [x] Seed data sufficient to satisfy testing resolution of defect
- [x] Root cause analysis provided

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__Database__
- [x] schema changes reviewed by Architect
- [x] Excessive SQL queries are not generated
- [x] Slow SQL queries are not generated unintentionally
- [x] No DB schema changes are backwards incompatible
- [x] Database schema changes documented on wiki
- [x] Migration provided

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__Shared Project / Dependencies__
- [x] Reviewed by Architect
- [x] API changes to shared components documented on wiki
- [x] 3rd-party library introduced:
- [x] explanation for updating a project dependency (e.g. 'latest version fixes a bug')