Update desktop file for pmchart
Update desktop file for pmchart

After recently reading up on the desktop integration files,
have made a couple of tweaks here - "Icon" entry should not
have any suffix, added several more "Categories" that we're
alike/in.

prasincs/pcp,adfernandes/pcp,wuliming/pcp,tjanez/pcp,wuliming/pcp,mbaldessari/pcp,tjanez/pcp,edwardt/pcp,wuliming/pcp,tjanez/pcp,wuliming/pcp,edwardt/pcp,andyvand/cygpcpfans,wuliming/pcp,aeg-aeg/pcpfans,prasincs/pcp,adfernandes/pcp,edwardt/pcp,adfernandes/pcp,edwardt/pcp,edwardt/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,adfernandes/pcp,andyvand/cygpcpfans,edwardt/pcp,andyvand/cygpcpfans,tjanez/pcp,aeg-aeg/pcpfans,adfernandes/pcp,tjanez/pcp,mbaldessari/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,andyvand/cygpcpfans,mbaldessari/pcp,adfernandes/pcp,aeg-aeg/pcpfans,edwardt/pcp,andyvand/cygpcpfans,prasincs/pcp,adfernandes/pcp,aeg-aeg/pcpfans,wuliming/pcp,prasincs/pcp,wuliming/pcp,mbaldessari/pcp,tjanez/pcp,mbaldessari/pcp,prasincs/pcp,aeg-aeg/pcpfans,tjanez/pcp,prasincs/pcp,aeg-aeg/pcpfans,wuliming/pcp,aeg-aeg/pcpfans,edwardt/pcp,mbaldessari/pcp,tjanez/pcp,prasincs/pcp,prasincs/pcp,adfernandes/pcp