* Add nix version to footer of hydra pages

Dependencies

• [2] T2232OBS * Add some DB indices to make the /releases page much faster.
• [3] 7Z3YOKCV * PROCESS -> INCLUDE in most cases. INCLUDE does proper scoping of
• [4] 3R5SCBEJ
• [5] JK2QWPH6
• [6] TQKGQ5R3
• [7] T4LLYESZ * Nix expression for building Hydra.
• [8] 6Y3CCJJM
• [9] KR7QIG6Z
• [10] ODNCGFQ5 * Improved the navigation bar: don't include all projects (since that
• [11] S66BOMVU * Added authentication.
• [12] UQ6K57MS * Include nix-prefetch-svn in the Hydra binary distribution.
• [*] J5UVLXOK * Start of a basic Catalyst web interface.

Change contents

• replacement in release.nix at line 98
  [2.56]→[2.56:113](∅→∅)
  − --set HYDRA_RELEASE ${tarball.version}
  [2.56]

  [3.1798]
  + --set HYDRA_RELEASE ${tarball.version} \

  + --set NIX_RELEASE ${nix.name}
• edit in src/lib/Hydra/Controller/Root.pm at line 18
  [2.464]

  [14.1351]
  + $c->stash->{nixVersion} = $ENV{"NIX_RELEASE"} || "<devel>";
• replacement in src/root/layout.tt at line 83
  [3.4834]→[2.2030:2083](∅→∅)
  − <em>Hydra [% HTML.escape(version) %].</em>
  [3.4834]

  [2.2083]
  + <em>Hydra [% HTML.escape(version) %] (using [% HTML.escape(nixVersion) %]).</em>