Simplified makefile.
Added status bar (with dummy text). Also added forward delarations.
Renamed makefile to Makefile
Grid elements now scale.
Fixed layout so that OptionsFrame and StatusBar don't expand with window
resize.
Updatped so that GridFrame, OptionsFrame, etc all take MainWindow
as a parameter.
Switched to c++11 standard; moved typedefs to common.hh; added
get_storey() function to House class.
Starting to add functions to redraw() grid.