Update cbox_is_theme_bp_compatible() to use BP 1.7 logic.

* Replace bp_get_template_part() function check for BP_Theme_Compat class
  1.7 abstraction layer.

* Removes 'buddypress' theme tag check and BP Template Pack check

* Replace with BP 1.7 logic
  * Check if theme supports BuddyPress with current_theme_supports()
  * Next, check if theme is a derivative of bp-default
  * Lastly, check if a theme bundles the members loop template.  If this
    template is found, we can assume the theme supports BuddyPress.
Update CBOX badge CSS styles.
Pin BuddyPress 1.6.5.
Pin Invite Anyone 1.0.19.
Pin Bebop 1.3.2.
Pin More Privacy Options 3.5.
Pin bbPress 2.2.4.
Prep changelogs for 1.0.3.