add missing data-default dependency (needed with new yesod only)

doc/bugs/Could_not_find_module_Data.Default.mdwn

@@ -29,3 +29,5 @@ Arch Linux
 **Please provide any additional information below.**
 
 When I add data-default to git-annex.cabal's Build-Deps it works fine.
+
+> Thanks, [[done]]. --[[Joey]]

doc/install.mdwn

@@ -52,6 +52,7 @@ libraries. To build and use git-annex by hand, you will need:
   * [yesod](http://hackage.haskell.org/package/yesod)
   * [yesod-static](http://hackage.haskell.org/package/yesod-static)
   * [yesod-default](http://hackage.haskell.org/package/yesod-default)
+  * [data-default](http://hackage.haskell.org/package/data-default)
   * [case-insensitive](http://hackage.haskell.org/package/case-insensitive)
   * [http-types](http://hackage.haskell.org/package/http-types)
   * [transformers](http://hackage.haskell.org/package/transformers)

git-annex.cabal

@@ -77,7 +77,7 @@ Executable git-annex
     Build-Depends: yesod, yesod-static, case-insensitive,
      http-types, transformers, wai, wai-logger, warp, blaze-builder,
      blaze-html, crypto-api, hamlet, clientsession,
-     template-haskell, yesod-default (>= 1.1.0)
+     template-haskell, yesod-default (>= 1.1.0), data-default
     CPP-Options: -DWITH_WEBAPP
 
   if os(darwin)