Fixed bug in e2.py, Wrapped all lines in tiles longer than 79 characters to conform to PEP 8

After completing the dwarf challenge the dwarf disappears and you receive the prize. If you then try to "take" the prize, the absent dwarf complains. I added a check so that this doesn't happen. 

Also, I went through all the tiles and wrapped ( mostly output strings ) which were longer than 79 characters so that they conform to the PEP 8 Style Guide. (http://www.python.org/dev/peps/pep-0008/#maximum-line-length)