Fixup Parameter form (float) and add testing gadget

See merge request !384
3 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS-Master.UnitTest-Master

01:23:42

failed SlapOS.Eggs.UnitTest-Master.Python2

00:11:45

failed SlapOS.Eggs.UnitTest-Master.Python3

00:14:57