Add multilingual support in Hugo

Implements:
* support to render:
  * content/post/whatever.en.md to /en/2015/12/22/whatever/index.html
  * content/post/whatever.fr.md to /fr/2015/12/22/whatever/index.html
* gets enabled when `Multilingual:` is specified in config.
* support having language switchers in templates, that know
  where the translated page is (with .Page.Translations)
  (when you're on /en/about/, you can have a "Francais" link pointing to
   /fr/a-propos/)
  * all translations are in the `.Page.Translations` map, including the current one.
* easily tweak themes to support Multilingual mode
* renders in a single swift, no need for two config files.

Adds a couple of variables useful for multilingual sites

Adds documentation (content/multilingual.md)

Added language prefixing for all URL generation/permalinking see in the
code base.

Implements i18n. Leverages the great github.com/nicksnyder/go-i18n lib.. thanks Nick.
* Adds "i18n" and "T" template functions..

1 files changed, 3 insertions, 3 deletions

diff --git a/commands/list.go b/commands/list.go
index 5267a4f8b..bc5bb557a 100644
--- a/commands/list.go
+++ b/commands/list.go
@@ -57,7 +57,7 @@ var listDraftsCmd = &cobra.Command{
 			return newSystemError("Error Processing Source Content", err)
 		}
 
-		for _, p := range site.Pages {
+		for _, p := range site.AllPages {
 			if p.IsDraft() {
 				fmt.Println(filepath.Join(p.File.Dir(), p.File.LogicalName()))
 			}
@@ -88,7 +88,7 @@ posted in the future.`,
 			return newSystemError("Error Processing Source Content", err)
 		}
 
-		for _, p := range site.Pages {
+		for _, p := range site.AllPages {
 			if p.IsFuture() {
 				fmt.Println(filepath.Join(p.File.Dir(), p.File.LogicalName()))
 			}
@@ -119,7 +119,7 @@ expired.`,
 			return newSystemError("Error Processing Source Content", err)
 		}
 
-		for _, p := range site.Pages {
+		for _, p := range site.AllPages {
 			if p.IsExpired() {
 				fmt.Println(filepath.Join(p.File.Dir(), p.File.LogicalName()))
 			}