#112464 standardize validation in field rather than widget, standardize use of $items rather than $node_field

 in content.module)

 when maxlength left empty - I forgot one #maxlength = '' occurrence

- updated some invalid strings for translation
- updated .pot file

#89172 improved handling for optionwidgets, adding ability to create options as an  array in php or as a list of values. Also fixes View handling, making sure the right value is swapped in for the option in Views tables and lists.

- Errors when user references were left blank

code. This will require fixes to any themes that rely on the node data
structure previously used.

Added a $node_field parameter to hook_field() and hook_widget(). This eases
a very common pattern of getting and setting this value. While $node is still
passed by reference, fields should *not* modify it. Instead, modify $node_field
which is saved back automatically.

This is ground work for implementing select/checkbox/radio widgets.

Per-field help text. Currently only visible in text widget; to be added to
all widgets.

efficient than the existing scheme. This is implemented only for text fields
at the moment; other fields will follow. This allows moving common code out
from most field types into content.module itself.

Views support is temporarily missing for text.module. It'll be back shortly,
but needs rewriting first.