Create parser for new definitions doc

[jjohnson660]

• Added the new definitions doc as "definitions2.docx".
• DefParser2 is the parsing algorithm for this new doc. The code's a little messy and not commented super well, but it seems like it works. I tried my best to make it more robust against typos.
• Right now, it's just printing to the console for testing purposes. The code to write everything to the database is there, it's just currently commented out. I'd like someone to review the console output before we push anything to the database.
• The only bug I can find right now is that the last word isn't getting parsed, same as last time. Honestly just going to manually enter it into the database though haha.

[jjohnson660]

New commit does the following:

• Accounts for contractions in DefParser for the first definitions.docx
• Makes changes in definitions2.docx to account for Neil's feedback
• Creates definitions3.docx and definitions4.docx as per the new documents Dr. Evans sent
• Creates DefParser3.py and DefParser4.py to parse the new definition docs

Neil, as for changing DefParser2.py per your feedback to account for the child words of words that have no definitions, do we actually want to make words that don't have definitions clickable in the first place? I know Dr. Evans said so, but I feel like it'd be better to just not highlight them in the first place. In this case, these child words wouldn't need to be parsed either if the parent doesn't have a definition anyways.