Fix #1643 (expandable): missing plus sign
Fix modifier key to keep selected item selected

Issue #1781, not using modifier key on modifierKeysToMultiSelect=true
correctly keep the selected item selected if multiple items were
previously selected
chore(Docs): Update docs for getting cell values
Merge pull request #1789 from mathiasdose/issue1781

Issue #1781: Fix modifier key to keep selected item selected
Feat(importer): create importer, bug fixes to exporter, extension to rowEdit

Importer provides the ability to import csv and json files from the file system
into your application.  If the rowEdit feature is enabled it will also save that
data to your server.

Minor edits to gridMenu to fix defaulting issues and treatment of show/hide columns
when columnDefs are present but data is not.

Extended rowEdit to have a `setRowsDirty` method that permits rows to be marked
as dirty programatically.
Merge pull request #1802 from PaulL1/create_importer

Feat(importer): create importer, bug fixes to exporter, extension to rowEdit
Fix(unit test): change from 1.2.10 to 1.2.14 so ngAnimateMock works

Also include 1.2.26 as newest, and drop 1.2.16 as very
close to 1.2.14

x
Fix #1800 (selection): selectionHeader should not be resizeable
Merge pull request #1804 from PaulL1/1800_resize_row_header

Fix #1800 (selection): selectionHeader should not be resizeable
Fix #1763 (selection): raise selectionChanged in more scenarios
Merge pull request #1805 from PaulL1/1763_row_selection_changed

Fix #1763 (selection): raise selectionChanged in more scenarios
Fix #1775 (selection): allow selection of rows by visible index
Merge pull request #1806 from PaulL1/1775_select_by_index

Fix #1775 (selection): allow selection of rows by visible index
Translated the new fields to Swedish
Merge pull request #1807 from mathiasdose/updateSwedishTranslation

Translated the new fields to Swedish
Dutch translation updates and additions
Merge pull request #1808 from Manduro/dutch-language-update

Dutch translation updates and additions
fix(Importer): Account for older browsers properly

* Tests were broken in IE9 and Safari 5 because they didn't support the File API. Made tests conditional so that certain ones only run when the File API is available. If it isn't, a test will make sure the importer is disabled.
* importer.js was using `this.grid.options` when it should have used `gridOptions`, in one case
* `gridOptions.importerShowMenu !== false` evaluates to true when the property is undefined. Changed to use `!!` to coerce to boolean.
* `if (window.File)` and other tests fail in Safari (and possibly other browsers) because the property is undefined. Changed to use $window.hasOwnProperty.
Merge pull request #1803 from PaulL1/angular_version

Fix(unit test): change from 1.2.10 to 1.2.14 so ngAnimateMock works
Merge pull request #1743 from jpuri/master

feat(Reorderable Columns): Add column reorder functionality.

Allow user to drag and drop columns to reorder them.