Improve c3 gauge widget

3 jobs for master in 4 minutes and 36 seconds (queued for 14 seconds)
Status Job ID Name Coverage
  Build
passed #5870166
job_build

00:02:44

62.18%
 
  Deploy
passed #5870167
job_deploy_demo

00:01:40

passed #5870168
job_deploy_testreport

00:01:31