Add DB columns for when to notify responsible committers and which inputs should be checked

Dependencies

• [2] PGSSRA7C Add an input type "nix" for passing arbitrary Nix expressions
• [*] N22GPKYT * Put info about logs / build products in the DB.
• [*] FYO6NECE hydra
• [*] QTFVCDIF added hide feature for project/jobset
• [*] KN3VYE5P * Cleaned up the foreign key constraints.
• [*] M552HLIA * Support variant builds.
• [*] 67P45PY4
• [*] D5QIOJGP * Move everything up one directory.

Change contents

• edit in src/sql/hydra.sql at line 60
  [5.5135]

  [6.3970]
  + emailResponsible integer not null default 0, -- whether to email committers responsible for a build change
• edit in src/sql/hydra.sql at line 81
  [2.1130]

  [7.5943]
  + checkResponsible integer not null default 0, -- whether this input should be checked for responsbile commits
• edit in src/sql/hydra.sql at line 262
  [8.3876]

  [9.4979]
  + checkResponsible integer not null default 0,
• file addition: upgrade-23.sql (----------)
  [10.3004]
  + alter table Jobsets add column emailResponsible integer not null default 0;

  + alter table JobsetInputs add column checkResponsible integer not null default 0;

  + alter table BuildInputs add column checkResponsible integer not null default 0;