Upgrade django-mozilla-rna
Upgrade django-mozilla-rna

Fix the issue where passing --clean to the `rnasync` command
wouldn't run the update if there were no new notes.

CSCI-462-01-2017/bedrock,kyoshino/bedrock,glogiotatidis/bedrock,analytics-pros/mozilla-bedrock,mkmelin/bedrock,jgmize/bedrock,glogiotatidis/bedrock,craigcook/bedrock,sylvestre/bedrock,sgarrity/bedrock,pascalchevrel/bedrock,sgarrity/bedrock,pascalchevrel/bedrock,mozilla/bedrock,schalkneethling/bedrock,jgmize/bedrock,jgmize/bedrock,gerv/bedrock,mozilla/bedrock,Sancus/bedrock,craigcook/bedrock,gerv/bedrock,analytics-pros/mozilla-bedrock,MichaelKohler/bedrock,CSCI-462-01-2017/bedrock,glogiotatidis/bedrock,flodolo/bedrock,sgarrity/bedrock,CSCI-462-01-2017/bedrock,Sancus/bedrock,craigcook/bedrock,ericawright/bedrock,kyoshino/bedrock,sylvestre/bedrock,hoosteeno/bedrock,analytics-pros/mozilla-bedrock,TheoChevalier/bedrock,craigcook/bedrock,sgarrity/bedrock,jgmize/bedrock,ericawright/bedrock,hoosteeno/bedrock,mkmelin/bedrock,ericawright/bedrock,flodolo/bedrock,alexgibson/bedrock,pascalchevrel/bedrock,mkmelin/bedrock,MichaelKohler/bedrock,TheoChevalier/bedrock,gerv/bedrock,mozilla/bedrock,MichaelKohler/bedrock,hoosteeno/bedrock,sylvestre/bedrock,TheoChevalier/bedrock,TheoChevalier/bedrock,mozilla/bedrock,Sancus/bedrock,pascalchevrel/bedrock,analytics-pros/mozilla-bedrock,schalkneethling/bedrock,alexgibson/bedrock,hoosteeno/bedrock,kyoshino/bedrock,sylvestre/bedrock,alexgibson/bedrock,CSCI-462-01-2017/bedrock,flodolo/bedrock,ericawright/bedrock,MichaelKohler/bedrock,Sancus/bedrock,kyoshino/bedrock,alexgibson/bedrock,schalkneethling/bedrock,flodolo/bedrock,mkmelin/bedrock,schalkneethling/bedrock,glogiotatidis/bedrock,gerv/bedrock