Changed initialization of types to support changes in accordion values

[MikeTschudi]

If the types list is not re-initialized, no new accordion items are added to the list with a new set of values.

If the accordion is initialized really quickly--as in < 30ms--we don't see this problem. But with a longer delay, such as by delaying initialization via setTimeout or a data fetch, render is called twice in a row.

During the first call, types gets initialized and accordion items are created. During the second call, the existing accordion items are cleared, but no new ones are created because each new item type is already found in types.