Begin dl if arriving with #download in URL. Bug 824356
Begin dl if arriving with #download in URL. Bug 824356

Two minor concerns:

- Possible race condition with pulling correct download link from
  DOM prior to window.load. Could duplicate DOM query in window.load
  to be safe.
- Install images may not be fully loaded if on slower connection. Not
  sure we can do much here.

mozilla/bedrock,rishiloyola/bedrock,MichaelKohler/bedrock,TheoChevalier/bedrock,yglazko/bedrock,mahinthjoe/bedrock,bensternthal/bedrock,mozilla/mwc,jgmize/bedrock,mmmavis/bedrock,jgmize/bedrock,craigcook/bedrock,Jobava/bedrock,TheoChevalier/bedrock,Jobava/bedrock,mkmelin/bedrock,mmmavis/lightbeam-bedrock-website,gerv/bedrock,jacshfr/mozilla-bedrock,mmmavis/lightbeam-bedrock-website,dudepare/bedrock,pmclanahan/bedrock,sgarrity/bedrock,mermi/bedrock,TheoChevalier/bedrock,jacshfr/mozilla-bedrock,flodolo/bedrock,jgmize/bedrock,petabyte/bedrock,sgarrity/bedrock,schalkneethling/bedrock,mozilla/bedrock,mkmelin/bedrock,craigcook/bedrock,sgarrity/bedrock,glogiotatidis/bedrock,hoosteeno/bedrock,sylvestre/bedrock,malena/bedrock,sgarrity/bedrock,SujaySKumar/bedrock,andreadelrio/bedrock,hoosteeno/bedrock,malena/bedrock,pmclanahan/bedrock,elin-moco/bedrock,chirilo/bedrock,petabyte/bedrock,analytics-pros/mozilla-bedrock,amjadm61/bedrock,kyoshino/bedrock,andreadelrio/bedrock,ckprice/bedrock,mmmavis/bedrock,mkmelin/bedrock,alexgibson/bedrock,TheJJ100100/bedrock,pmclanahan/bedrock,marcoscaceres/bedrock,TheJJ100100/bedrock,Sancus/bedrock,petabyte/bedrock,alexgibson/bedrock,malena/bedrock,jacshfr/mozilla-bedrock,gerv/bedrock,jpetto/bedrock,hoosteeno/bedrock,MichaelKohler/bedrock,amjadm61/bedrock,ckprice/bedrock,alexgibson/bedrock,gauthierm/bedrock,glogiotatidis/bedrock,mermi/bedrock,malena/bedrock,davehunt/bedrock,flodolo/bedrock,davehunt/bedrock,CSCI-462-01-2017/bedrock,CSCI-462-01-2017/bedrock,mermi/bedrock,ericawright/bedrock,rishiloyola/bedrock,jacshfr/mozilla-bedrock,Sancus/bedrock,kyoshino/bedrock,elin-moco/bedrock,jpetto/bedrock,SujaySKumar/bedrock,Sancus/bedrock,yglazko/bedrock,jpetto/bedrock,schalkneethling/bedrock,sylvestre/bedrock,glogiotatidis/bedrock,SujaySKumar/bedrock,pascalchevrel/bedrock,analytics-pros/mozilla-bedrock,jacshfr/mozilla-bedrock,pascalchevrel/bedrock,gerv/bedrock,bensternthal/bedrock,andreadelrio/bedrock,gauthierm/bedrock,dudepare/bedrock,MichaelKohler/bedrock,Sancus/bedrock,pascalchevrel/bedrock,gerv/bedrock,kyoshino/bedrock,dudepare/bedrock,chirilo/bedrock,CSCI-462-01-2017/bedrock,mahinthjoe/bedrock,chirilo/bedrock,ckprice/bedrock,TheoChevalier/bedrock,andreadelrio/bedrock,amjadm61/bedrock,mozilla/bedrock,l-hedgehog/bedrock,gauthierm/bedrock,ericawright/bedrock,mahinthjoe/bedrock,mozilla/mwc,flodolo/bedrock,mmmavis/bedrock,mkmelin/bedrock,rishiloyola/bedrock,mozilla/bedrock,elin-moco/bedrock,Jobava/bedrock,davehunt/bedrock,craigcook/bedrock,yglazko/bedrock,schalkneethling/bedrock,amjadm61/bedrock,l-hedgehog/bedrock,dudepare/bedrock,sylvestre/bedrock,mermi/bedrock,davehunt/bedrock,elin-moco/bedrock,sylvestre/bedrock,jgmize/bedrock,mahinthjoe/bedrock,hoosteeno/bedrock,marcoscaceres/bedrock,SujaySKumar/bedrock,TheJJ100100/bedrock,mmmavis/lightbeam-bedrock-website,marcoscaceres/bedrock,yglazko/bedrock,mozilla/mwc,ckprice/bedrock,l-hedgehog/bedrock,alexgibson/bedrock,jpetto/bedrock,mozilla/mwc,schalkneethling/bedrock,marcoscaceres/bedrock,CSCI-462-01-2017/bedrock,bensternthal/bedrock,analytics-pros/mozilla-bedrock,pascalchevrel/bedrock,glogiotatidis/bedrock,gauthierm/bedrock,Jobava/bedrock,bensternthal/bedrock,pmclanahan/bedrock,TheJJ100100/bedrock,l-hedgehog/bedrock,mmmavis/bedrock,craigcook/bedrock,chirilo/bedrock,flodolo/bedrock,analytics-pros/mozilla-bedrock,MichaelKohler/bedrock,ericawright/bedrock,kyoshino/bedrock,petabyte/bedrock,rishiloyola/bedrock,ericawright/bedrock,amjadm61/bedrock