Renamed MHW files

Removed suffixes. Model diagrams now labeled as such.

	renamed:    MHW_Draft_1.pdf -> MHW_Draft_Diagram.pdf
	renamed:    MHW_Draft_1.svg -> MHW_Draft_Diagram.svg
	renamed:    MHW_ED_0522.png -> MHW_ED.png
	renamed:    MHW_MD_0522.png -> MHW_MD.png
	renamed:    Montane Hardwood Draft Description 052213.docx -> Montane Hardwood Draft Description.docx