Merge branch 'fixcharts' into 'develop'

Fix stats stopping jan 2019 - allow for unlimited range

See merge request diasporg/Poduptime!234
2 jobs for develop
Status Job ID Name Coverage
  Test
failed #2656
test:7.2

failed #2657
test:7.3

 
Name Stage Failure
failed
test:7.2 Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
test:7.3 Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log