Add missing glyphs to glyphs example and add HoverTool
Add missing glyphs to glyphs example and add HoverTool

- Adds a note that the Image and ImageRGBA glyphs are still missing
- Adds the HoverTool so you can see which items have HoverTool and the
information that's available.

khkaminska/bokeh,roxyboy/bokeh,philippjfr/bokeh,bokeh/bokeh,aavanian/bokeh,muku42/bokeh,stonebig/bokeh,azjps/bokeh,khkaminska/bokeh,evidation-health/bokeh,paultcochrane/bokeh,Karel-van-de-Plassche/bokeh,deeplook/bokeh,draperjames/bokeh,muku42/bokeh,ericdill/bokeh,timsnyder/bokeh,KasperPRasmussen/bokeh,Karel-van-de-Plassche/bokeh,paultcochrane/bokeh,josherick/bokeh,timsnyder/bokeh,htygithub/bokeh,CrazyGuo/bokeh,htygithub/bokeh,deeplook/bokeh,azjps/bokeh,paultcochrane/bokeh,josherick/bokeh,matbra/bokeh,draperjames/bokeh,carlvlewis/bokeh,mindriot101/bokeh,msarahan/bokeh,percyfal/bokeh,schoolie/bokeh,ericdill/bokeh,mindriot101/bokeh,quasiben/bokeh,KasperPRasmussen/bokeh,josherick/bokeh,evidation-health/bokeh,CrazyGuo/bokeh,htygithub/bokeh,rothnic/bokeh,khkaminska/bokeh,quasiben/bokeh,roxyboy/bokeh,ericmjl/bokeh,tacaswell/bokeh,bokeh/bokeh,carlvlewis/bokeh,aiguofer/bokeh,ChinaQuants/bokeh,msarahan/bokeh,Karel-van-de-Plassche/bokeh,jplourenco/bokeh,msarahan/bokeh,schoolie/bokeh,jakirkham/bokeh,draperjames/bokeh,jakirkham/bokeh,bokeh/bokeh,rs2/bokeh,gpfreitas/bokeh,khkaminska/bokeh,phobson/bokeh,srinathv/bokeh,dennisobrien/bokeh,percyfal/bokeh,DuCorey/bokeh,mindriot101/bokeh,maxalbert/bokeh,tacaswell/bokeh,dennisobrien/bokeh,msarahan/bokeh,htygithub/bokeh,quasiben/bokeh,aiguofer/bokeh,josherick/bokeh,azjps/bokeh,daodaoliang/bokeh,clairetang6/bokeh,rs2/bokeh,philippjfr/bokeh,Karel-van-de-Plassche/bokeh,rs2/bokeh,rothnic/bokeh,deeplook/bokeh,dennisobrien/bokeh,ptitjano/bokeh,ptitjano/bokeh,dennisobrien/bokeh,srinathv/bokeh,philippjfr/bokeh,matbra/bokeh,xguse/bokeh,timsnyder/bokeh,aavanian/bokeh,matbra/bokeh,rs2/bokeh,daodaoliang/bokeh,ptitjano/bokeh,ChinaQuants/bokeh,aiguofer/bokeh,srinathv/bokeh,aavanian/bokeh,rothnic/bokeh,KasperPRasmussen/bokeh,ChinaQuants/bokeh,ericmjl/bokeh,ericmjl/bokeh,azjps/bokeh,phobson/bokeh,schoolie/bokeh,justacec/bokeh,Karel-van-de-Plassche/bokeh,muku42/bokeh,bokeh/bokeh,ericmjl/bokeh,jakirkham/bokeh,xguse/bokeh,DuCorey/bokeh,gpfreitas/bokeh,aavanian/bokeh,saifrahmed/bokeh,jakirkham/bokeh,mindriot101/bokeh,percyfal/bokeh,jplourenco/bokeh,dennisobrien/bokeh,timsnyder/bokeh,ericdill/bokeh,KasperPRasmussen/bokeh,DuCorey/bokeh,KasperPRasmussen/bokeh,tacaswell/bokeh,ptitjano/bokeh,draperjames/bokeh,maxalbert/bokeh,rothnic/bokeh,deeplook/bokeh,phobson/bokeh,DuCorey/bokeh,jplourenco/bokeh,jakirkham/bokeh,caseyclements/bokeh,stonebig/bokeh,draperjames/bokeh,ericdill/bokeh,ptitjano/bokeh,caseyclements/bokeh,aavanian/bokeh,roxyboy/bokeh,azjps/bokeh,gpfreitas/bokeh,tacaswell/bokeh,carlvlewis/bokeh,jplourenco/bokeh,clairetang6/bokeh,CrazyGuo/bokeh,timsnyder/bokeh,daodaoliang/bokeh,schoolie/bokeh,justacec/bokeh,roxyboy/bokeh,caseyclements/bokeh,bokeh/bokeh,caseyclements/bokeh,philippjfr/bokeh,saifrahmed/bokeh,ChinaQuants/bokeh,daodaoliang/bokeh,stonebig/bokeh,philippjfr/bokeh,rs2/bokeh,evidation-health/bokeh,xguse/bokeh,saifrahmed/bokeh,srinathv/bokeh,stonebig/bokeh,schoolie/bokeh,DuCorey/bokeh,phobson/bokeh,justacec/bokeh,gpfreitas/bokeh,matbra/bokeh,percyfal/bokeh,clairetang6/bokeh,percyfal/bokeh,xguse/bokeh,paultcochrane/bokeh,CrazyGuo/bokeh,clairetang6/bokeh,maxalbert/bokeh,evidation-health/bokeh,aiguofer/bokeh,carlvlewis/bokeh,ericmjl/bokeh,saifrahmed/bokeh,aiguofer/bokeh,maxalbert/bokeh,phobson/bokeh,muku42/bokeh,justacec/bokeh