Issue #1493894: Notice: Undefined index: options_text in _form_options_validate() (Default values in Options Elements not editable).

Issue #1198142 by David_Rothstein: Elements with #default_value of FALSE can't have their default value edited again.

Issue #1380470 by Liam Morland: Notice: Undefined variable: default_value in _form_type_options_value().

#1009082 by james.elliott: Show / Hide row weights link on the options configuration table doesn't do anything so it should be removed.

#1010694: Remove unnecessary files[] declarations from .info file (applied to all quicksketch-owned projects).

#1009508 by David_Rothstein: Elements with the "multiple" but not "multiple_toggle" property (e.g. checkboxes) don't have their default values saved.

Further improvements for IE compatibility. Now supports maintaining custom keys while toggling back and forth from optgroups and options.

Adding "Add item" link at the bottom of option list. Adjusting scrolling as new options are added. Fixing issue with multiple options elements on the same page.

- Default values may now be omitted by settings #default_value = FALSE;
- OptionsElement options are now available from JS in Drupal.optionElements
- Automatic keying of "mixed" options is improved