Feature complete (for this feature).
-added doPersistentAction and addPersistentAction to solve the custom post type/permalink conundrum/bug.
-Activation now flushes rewrite rules only if a custom post type has been added, so that now permalinks work when
you reactivate a plugin after adding a post type.
-fixed some minor bugs with the way the hello functionality worked.
-fixed meta box positioning persistence that was broken inadvertently from earlier fix.
-fixed nonce nonsense. (unless that was added earlier?) Now nonces are handled by javascript, so no need to add them to your forms.