Minor edits in spatial diagnostics module
Minor edits in spatial diagnostics module

jlaura/pysal,lixun910/pysal,pastephens/pysal,lixun910/pysal,pastephens/pysal,nathania/pysal,TaylorOshan/pysal,chhao91/pysal,hasecbinusr/pysal,ljwolf/pysal,pedrovma/pysal,TaylorOshan/pysal,sjsrey/pysal_core,sjsrey/pysal,lanselin/pysal,jlaura/pysal,badjr/pysal,sjsrey/pysal_core,ljwolf/pysal_core,chhao91/pysal,jlaura/pysal,pastephens/pysal,badjr/pysal,weikang9009/pysal,ljwolf/pysal,lixun910/pysal,ljwolf/pysal_core,pysal/pysal,sjsrey/pysal_core,ljwolf/pysal,TaylorOshan/pysal,ljwolf/pysal_core,hasecbinusr/pysal,nathania/pysal,hasecbinusr/pysal,schmidtc/pysal,schmidtc/pysal