* hydra: reinstate proper error for non existing build, Hydra/9

Dependencies

• [2] 2M7J26V4 inital version of links to diff in scm
• [3] LBNVQXUB * Build the /build stuff in a separate controller.
• [4] KAZWI5G4 * hydra: buildpage, show changes since last build/successful build
• [5] 5NO7NCKT * Refactoring.

Change contents

• edit in src/lib/Hydra/Controller/Build.pm at line 18
  [3.466]

  [3.0]
  +

  + notFound($c, "Build with ID $id doesn't exist.")

  + if !defined $c->stash->{build};

  +
• edit in src/lib/Hydra/Controller/Build.pm at line 26
  [2.66]→[3.818:819](∅→∅),[3.162]→[3.818:819](∅→∅),[3.466]→[3.818:819](∅→∅),[3.819]→[2.67:68](∅→∅),[2.68]→[3.819:912](∅→∅),[3.819]→[3.819:912](∅→∅)
  −

  −

  − notFound($c, "Build with ID $id doesn't exist.")

  − if !defined $c->stash->{build};