[bug  1366952] Add conditional to download survey link JS
[bug  1366952] Add conditional to download survey link JS

Make sure the survey link exists before trying to show it.

mkmelin/bedrock,mozilla/bedrock,mozilla/bedrock,MichaelKohler/bedrock,gerv/bedrock,schalkneethling/bedrock,craigcook/bedrock,MichaelKohler/bedrock,sgarrity/bedrock,flodolo/bedrock,pascalchevrel/bedrock,flodolo/bedrock,craigcook/bedrock,sylvestre/bedrock,flodolo/bedrock,sgarrity/bedrock,ericawright/bedrock,sylvestre/bedrock,mozilla/bedrock,hoosteeno/bedrock,alexgibson/bedrock,gerv/bedrock,kyoshino/bedrock,mozilla/bedrock,sylvestre/bedrock,ericawright/bedrock,kyoshino/bedrock,MichaelKohler/bedrock,alexgibson/bedrock,mkmelin/bedrock,sylvestre/bedrock,ericawright/bedrock,hoosteeno/bedrock,alexgibson/bedrock,mkmelin/bedrock,hoosteeno/bedrock,alexgibson/bedrock,mkmelin/bedrock,kyoshino/bedrock,sgarrity/bedrock,craigcook/bedrock,pascalchevrel/bedrock,schalkneethling/bedrock,schalkneethling/bedrock,MichaelKohler/bedrock,gerv/bedrock,flodolo/bedrock,schalkneethling/bedrock,craigcook/bedrock,kyoshino/bedrock,ericawright/bedrock,pascalchevrel/bedrock,hoosteeno/bedrock,gerv/bedrock,pascalchevrel/bedrock,sgarrity/bedrock