Resolved issues discovered in https://github.com/flipperbw/HSBuddy/pull/1

I fixed up the issues outlined in my previous pull request (here: https://github.com/flipperbw/HSBuddy/pull/1).

The comments specifically:
https://github.com/flipperbw/HSBuddy/pull/1#issuecomment-44454217
https://github.com/flipperbw/HSBuddy/pull/1#issuecomment-44457053

To summarize, the .csproj file was updated to contain the new file names, several lines of necessary code that were left commented out are now no longer commented, all decklists (including the empty list) are now present in AllDeckCardLists.json, and a poorman's Singleton was implemented in CardList.cs to help with excessive instantiation (and sometimes not instantiating).