Fixes badly formatted poems.

Extra backslashes and missing IDs were corrected.
Add The Raven by E.A.P.
Fixed the Python script.

Stop adding backslashes at the end of the poem.
Updated IDEA settings.
Wrote the Library abstract class.

Made a better class for storing and querying Hints.
Renamed PoetryData to PoetryLibrary.
Also moved hints to a text file.
Updated README