Add additional punctuation and stop words to strip
Change minimum DF to 25 to 10

- keeps super rare terms (typically misspellings) from being included
in the terms
Fix implementation of subject and desc. extraction

- Separated the analyze function to be separate functions that run on
subject and description and store them in separate variables instead of
appending to an array
- Fixed all major context problems that were causing the results to be
inaccessible
-Rename test function tfidfPoop to analyzeTicket