App Builder: XHR manager bind*() returns binding that can be unbound later. Towards #411
App Builder: XHR manager bind*() returns binding that can be unbound later.
Towards #411

jacksonic/foam,jlhughes/foam,mdittmer/foam,jacksonic/foam,jacksonic/foam,jlhughes/foam,foam-framework/foam,mdittmer/foam,jlhughes/foam,mdittmer/foam,foam-framework/foam,jacksonic/foam,jlhughes/foam,foam-framework/foam,mdittmer/foam,foam-framework/foam,foam-framework/foam