Products.datagridfield

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- added new demo data fields in examples profile [tkimnguyen]

- removed old nested_scopes imports [tkimnguyen]

- Added support for many more types of fields (DateColumn,
DatetimeColumn, DatetimeLocalColumn, FileColumn, EmailColumn,
ColorColumn, PasswordColumn, RangeColumn, MonthColumn, SearchColumn,
TimeColumn, UrlColumn, WeekColumn) to match <input> tag types
according to http://www.w3schools.com/tags/tag_input.asp Beware not
all browsers support these! See that page for browser specific
limitations. [tkimnguyen]

- Portuguese pt-br translation. [lccruz + jtmolon]

- Replace uses of .gif images from Plone with .png.
[maurits]

- Fixed bug in adding new row. Now new rows inputs has an unique id [cekk]

- Accessibility fix: wrap command icons inside links so can be reached using keyboard
[keul]

- Prevent a JavaScript error if user try to change row order a single-row table
[keul]

- Accessibility fix: every form field inside columns now has a ``title`` attribute that repeat
the column's label
[keul]

- SelectColumn. Removed the value attribute on ``select`` HTML tag
[keul]

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- Support argument ``label`` plus the standard keyword arguments in
all Columns: ``col_description``, ``default``, ``default_method``,
``visible``, ``required``. Child classes may support more arguments
or keywords arguments.
[maurits]

- No longer support ``label_msgid`` in Columns. This was unused for
years.
[maurits]

- Change ``Column.getLabel`` to support translation again. You should
pass a request as the context.
[maurits]

- New column option ``col_description``: display help text for column purpose
[keul]

- New column option ``required``: mark data inside column as required
[keul]

- Added alpha channel to grid icons
[keul]

- Added a ``visualClear`` div after the "add new row" button.
This fix visual issues when field validation error take place.
[keul]

- Give focus to first column of new added row [keul]

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- added Italian locale [cekk]

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- support for brower view names as 'vocabulary' parameter
for SelectColumn class

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- added new CSS classes to the manipulator table cells in order
to be able to attach custom JS handlers
[ajung]

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- Added English locale. Minor internal packaging improvements.
[maurits]