profile_pictures 6.x-1.3

A lot of bug fixes:
Fixed #855416: Explanation doesn't show in UI by yeputons (reported by jenna.tollerson): explanation doesn't show in UI:
Explanation is stored in $field->explanation, not $field->description. Changed.
Fixed #849978: Image is being deleting when saving non-picture fields (used with One Page Profile) by yeputons (reported by KasperChristensen): image is being deleting when
saving non-picture fields (used with One Page Profile).
Fixed #884200: CVS .info file incorrect by yeputons (repoted by bamakojeff): removed drupal.org packaging
script information from profile_pictures.info.
Fixed by yeputons: form_set_error in profile_picture_validate was called
for unexistent element 'profile_file'. Changed to $field->name . '_upload'.
Fixed #879102: Image Properties not saving by yeputons (reported by kayusee): didn't filling in
$form['#validate'] and $form['#submit'] in admin form, so some
modules can break out callbacks while overwriting this attirbutes.
Fixed #886510: Image not uploaded in signup by wowik73: added form enctype
for correct work in user creation form.
Fixed #890966: Typo on error message, "an negative number" by yeputons (reported by verta): typing error in
message.
Fixed #890980: required fields not marked with asterisk by yeputons (reported by verta): added #required attribute
and default values to 'maxsize' and 'maxdims' fields in admin form.
Fixed #889222: Automatically picture upload directory creation (if not exists) by yeputons (reported by wowik73): creating directory for
files if not exists.