code and comments cleanup, proper comments according to warnings from StyleCop
code and comments cleanup, proper comments according to warnings from StyleCop

olegtarasov/oxyplot,NilesDavis/oxyplot,br111an/oxyplot,lynxkor/oxyplot,shoelzer/oxyplot,Kaplas80/oxyplot,H2ONaCl/oxyplot,H2ONaCl/oxyplot,jeremyiverson/oxyplot,Isolocis/oxyplot,objorke/oxyplot,bbqchickenrobot/oxyplot,jeremyiverson/oxyplot,mattleibow/oxyplot,lynxkor/oxyplot,GeertvanHorrik/oxyplot,shoelzer/oxyplot,mattleibow/oxyplot,GeertvanHorrik/oxyplot,BRER-TECH/oxyplot,HermanEldering/oxyplot,Kaplas80/oxyplot,DotNetDoctor/oxyplot,DotNetDoctor/oxyplot,objorke/oxyplot,Jofta/oxyplot,Rustemt/oxyplot,BRER-TECH/oxyplot,Sbosanquet/oxyplot,Mitch-Connor/oxyplot,shoelzer/oxyplot,bbqchickenrobot/oxyplot,freudenthal/oxyplot,objorke/oxyplot,as-zhuravlev/oxyplot_wpf_fork,freudenthal/oxyplot,HermanEldering/oxyplot,TheAlmightyBob/oxyplot,as-zhuravlev/oxyplot_wpf_fork,Rustemt/oxyplot,Mitch-Connor/oxyplot,svendu/oxyplot,Sbosanquet/oxyplot,Sbosanquet/oxyplot,H2ONaCl/oxyplot,TheAlmightyBob/oxyplot,oxyplot/oxyplot,svendu/oxyplot,olegtarasov/oxyplot,bbqchickenrobot/oxyplot,Rustemt/oxyplot,Mitch-Connor/oxyplot,br111an/oxyplot,svendu/oxyplot,GeertvanHorrik/oxyplot,zur003/oxyplot,ze-pequeno/oxyplot,jeremyiverson/oxyplot,br111an/oxyplot,Jonarw/oxyplot,TheAlmightyBob/oxyplot,lynxkor/oxyplot,freudenthal/oxyplot,as-zhuravlev/oxyplot_wpf_fork