Add 2.0 release branch of gsb_feature_base_fields.
Add 2.0 release branch of gsb_feature_phd_candidate_ct.
Prepare for 2.2 release.
Add 2.0 release branch of gsb_field_formatter.
Add 2.0 release branch of gsb_panels_pages.
Add 2.0 release branch of gsb_theme.
Add 2.0 release branch of gsb_feature_event_ct.
Add 2.0 release branch of gsb_feature_event_display.