renamed Rankings class to Players
fixed some json parsing issues
a few more ArrayLists are now trimmed
cleaned up some Exception handling
tiny code cleanup
it's now possible to receive just 1 player / tournament
a singular Player object can now be saved back into the database
updated a few method names
preparing PlayerActivity for match-displaying
win / lose matches now have different text colors
the MatchesAdapter now handles the different types of list items
a Player's matches are now displayed in PlayerActivity