version number 0.3.9
#1260 - change the preview link functionality to hide previous graphs and spawn a new one
           - added functionality to hide with slide previous graph and show new one - not working well yet :)
Merge pull request #1311 from OCHA-DAP/arti-sprint-32

#1260 - change the preview link functionality to hide previous graphs an...
Merge pull request #1312 from OCHA-DAP/dev

Merge DEV to STAGING