added forEach instead of for loop, for all episodes to be visible
added forEach instead of for loop, for all episodes to be visible

- forEach will go through all "td" elements in html code in every node,
instead of skipping some nodes like with the reverse "for" loop.
- marginBottom will be changed to 15% if any episode was released on
current day
- added nthParent function to find parentNode of any given element
- added links/credit to source codes on stackoverflow, as I didn't write
everything in this code by myself :-)

blackCheetah/tvshortcut,blackCheetah/tvshortcut,blackCheetah/tvshortcut