Exception handling added for ComicVineIssues. A strange issue was
occuring with issues numbers resulting in 1/4 being displayed as the
issue number instead of the actual number. This was replaced with 0 as a
default.

All occurances of 1/4 are replaced when the item is placed within the
hashmap.

Issue test was also updated with URL Encoding to test the query
parameter that resulted in this condition occuring.