Improve plugin settings form
Add MultipleItemsField + Widget
Add WTForms CKEditorWidget
Pass kwargs in WPConferenceBase
list_from_signal->values_from_signal, docstring
Let plugins extend the event sidemenu
Fix some Sphinx errors
Delete some obsolete RB test code
Fix event_management_sidemenu documentation
Add convert_principal_list util for ZODB import
Add jqplot to external modules
Add include_css/js_assets for global bundles
Add missing argument in docstring