added buttonPlaceholders argument to child-container markup-generator function.
updated arguments list for ilios.dom.buildChildContainerDOMTree(). minor code cleanup.
added capability flag to ilios.pm module. code cleanup: converted one-off named method to anon. function.
wired link to curriculum inventory manager to program year UI
added method for retrieving curriculum inventory programs by a given ilios program id.
added button label.
augmented output to push curriculum inventory mngmt capabilities and existing program-year/curriculum-inventory-program mappings to the view.