feat(cellTemplates): add MODEL_COL_FIELD to cellTemplate parsing so it can be used in ng-model #1633
Breaking Change: All editable cell templates must be changed to use MODEL_COL_FIELD
fix(core) grid header was added twice if columns.length wasn't greater than columnDefs.  This was an edge case happening in my application
Merge pull request #1640 from swalters/Issue1633

feat(cellTemplates): add MODEL_COL_FIELD to cellTemplate parsing
Merge branch 'master' of https://github.com/angular-ui/ng-grid into move-columns