make sure decimals and numbers are rendered as string
convert decimal to str also when we are not filtering the list of thresholds
do proper json encoding of result
re-add Decimal conversion
encode numbers as json numbers instead of strings
use official json mimetype
give the system a bit more time to fetch job status
add some real info to experiment listing for biodiversity projects
Merge branch 'develop' into qa

* develop:
  add some real info to experiment listing for biodiversity projects
  give the system a bit more time to fetch job status
  use official json mimetype
  encode numbers as json numbers instead of strings
  re-add Decimal conversion
  do proper json encoding of result
  convert decimal to str also when we are not filtering the list of thresholds
  make sure decimals and numbers are rendered as string