* Fixed issue where user would have to trigger dir-up action multiple times to get it to work
* Fix to path_join to ensure the result does not have a double slash
(non breaking, old assignments link to new assignments)
- move lib.collapse-all into actions/collapse-all
- move lib.dir-up into actions/dir-up
- move lib.change-dir into actions/change-dir
- use setup option for change-dir global (and use the old option for
setup)
