Rename layout_location to panel_side
Rename layout_location to panel_side

Hopefully clearer what this is referencing, given new SidePanel setup

schoolie/bokeh,justacec/bokeh,jakirkham/bokeh,clairetang6/bokeh,schoolie/bokeh,schoolie/bokeh,bokeh/bokeh,aavanian/bokeh,dennisobrien/bokeh,schoolie/bokeh,bokeh/bokeh,justacec/bokeh,draperjames/bokeh,mindriot101/bokeh,rs2/bokeh,draperjames/bokeh,phobson/bokeh,clairetang6/bokeh,aiguofer/bokeh,phobson/bokeh,azjps/bokeh,bokeh/bokeh,bokeh/bokeh,mindriot101/bokeh,dennisobrien/bokeh,azjps/bokeh,timsnyder/bokeh,justacec/bokeh,ptitjano/bokeh,rs2/bokeh,dennisobrien/bokeh,philippjfr/bokeh,percyfal/bokeh,rs2/bokeh,timsnyder/bokeh,percyfal/bokeh,DuCorey/bokeh,stonebig/bokeh,DuCorey/bokeh,mindriot101/bokeh,jakirkham/bokeh,schoolie/bokeh,justacec/bokeh,Karel-van-de-Plassche/bokeh,quasiben/bokeh,jakirkham/bokeh,azjps/bokeh,timsnyder/bokeh,clairetang6/bokeh,DuCorey/bokeh,aavanian/bokeh,DuCorey/bokeh,aavanian/bokeh,ptitjano/bokeh,phobson/bokeh,aiguofer/bokeh,rs2/bokeh,ericmjl/bokeh,azjps/bokeh,jakirkham/bokeh,aiguofer/bokeh,stonebig/bokeh,aavanian/bokeh,ericmjl/bokeh,Karel-van-de-Plassche/bokeh,phobson/bokeh,ericmjl/bokeh,draperjames/bokeh,quasiben/bokeh,ericmjl/bokeh,philippjfr/bokeh,Karel-van-de-Plassche/bokeh,ptitjano/bokeh,aavanian/bokeh,mindriot101/bokeh,azjps/bokeh,phobson/bokeh,percyfal/bokeh,Karel-van-de-Plassche/bokeh,ericmjl/bokeh,jakirkham/bokeh,quasiben/bokeh,stonebig/bokeh,ptitjano/bokeh,DuCorey/bokeh,percyfal/bokeh,stonebig/bokeh,timsnyder/bokeh,dennisobrien/bokeh,draperjames/bokeh,aiguofer/bokeh,clairetang6/bokeh,percyfal/bokeh,ptitjano/bokeh,philippjfr/bokeh,philippjfr/bokeh,Karel-van-de-Plassche/bokeh,rs2/bokeh,dennisobrien/bokeh,philippjfr/bokeh,aiguofer/bokeh,bokeh/bokeh,draperjames/bokeh,timsnyder/bokeh