Consolidating tests, no more skips
 - moved list tests from list.py to test_list.py
 - testhelp.HelpedTestCase.assertModule()
 - testhelp.HelpedTestCase.assertOptionHelp()
 - help/helptest: chron, dt, hd, jcal, list
 - HelpedTestCase: align, ascii, bscr, calc, chron, dt, filter, fx,
   hd, jcal, mag
 - usage: chron, dt, hd, list
 - which_module: align, ascii, bscr, calc, chron, dt, filter, fl, fx,
   hd, jcal, list, mag, odx, perrno, xclean