GetLeague now works.

Did some string manipulation so that rather than getting a
dictionary<string, league> we just return a league. The only problem
with it now is that MiniSeries doesn't work at all so i removed marking
it as a datamember so it will always be null now
Changed implementation of collection classes

-Made list getters as obsolete
-Changed IEnumerable to ICollection
-changed dock on the datagrid view in the summoner and team forms
GetLeague now works

String manipulation ftw