Glimmer DSL for SWT 4.17.7.0 checkbox_group and radio_group Built-In Custom Widgets

Glimmer DSL for SWT 4.17.7.0 ships with the checkbox_group and radio_group Built-In Custom Widgets enabling the spawning of checkboxes and radios automatically with data-binding.

Changes:

• checkbox_group built-in custom widget
• Hello, Checkbox Group! Sample
• Refactor radio_group to render labels instead of relying on radio button text since they are better stylable
• Refactor Glimmer Meta-Sample to use radio_group instead of radio
• Fix issue with ExpandBar fill_layout with the extra element at the end (remove it)

Samples:

Hello, Checkbox Group!

Hello, Radio Group!

Happy Glimmering!