Cleaned up main window a bit
IsTileSelected is now a member of TileSelectorScene
Removed "IsTileSelected"
Removed from .h
add a getselectedtile function
removed getselectedtileitem
removed another function
minor crap
Removing shit from mainwindow, putting it in sensible locations
Merge branch 'master' into ResourceViewAddition

Conflicts:
	MainWindow.cpp
	MainWindow.h
	TrygonLevelEditor.pro.user
Merged in the main window cleanup branch
Layer selection update now hypothetically works through a signal,
bypassing an intermediary function in main window
Signal now connects correctly