Fix two small problems on how we handle manual actions

What does this MR do?

Fixes two small problems in how we handle manual actions:

• On environments page we show a Play for the same action that is lately deployed, we should show other actions only

• When we process a pipeline that have only a manual action in a stage, the pipeline will stop being processed.

• Tests

  • Added for this feature/bug
  • All builds are passing

• Conform by the style guides

• Branch has no merge conflicts with master (if you do - rebase it please)

• Squashed related commits together