Refactor|UI|Client: Added PanelWidget as base class of PopupWidget
Panels are containers that may be opened or closed. PopupWidget nowextends PanelWidget with anchor positioning and indicator.
View differences
Refactor|UI|Client: Added PanelWidget as base class of PopupWidget
Panels are containers that may be opened or closed. PopupWidget now
extends PanelWidget with anchor positioning and indicator.