** Removed WorkspaceViewBackingBean and exploded it into three new
classes WorkspaceMemebersBackingBean, WorkspaceIndexBackingBean and
GenericWorkspaceBackingBean
** Changed workspace navigation widgets to use
genericWorkspaceBackingBean
** Renamed GenericWorkspaceBackingBean into
WorkspaceNavigationBackingBean and changed it to be injected into view
backing beans instead of inhering
** Fixed navigation on WorkspaceMaterialsBackingBean
** Removed unused methods from WorkspaceIndexBAckingBean
** Moved workspace member related methods into
WorkspaceMembersBackingBean