Don't rewrite URLs

Remove the code that was appending ../static in front of some URLs, and add a
way to do cross-content linking.

samples/content/another_super_article.rst

@@ -14,7 +14,7 @@ Why not ?
 After all, why not ? It's pretty simple to do it, and it will allow me to write my blogposts in rst !
 YEAH !
 
-.. image:: pictures/Sushi.jpg
+.. image:: |filename|/pictures/Sushi.jpg
    :height: 450 px
    :width: 600 px
    :alt: alternate text

samples/content/cat1/markdown-article.md

@@ -2,3 +2,6 @@ Title: A markdown powered article
 Date: 2011-04-20
 
 You're mutually oblivious.
+
+[a root-relative link to unbelievable](|filename|/unbelievable.rst)
+[a file-relative link to unbelievable](|filename|../unbelievable.rst)

samples/content/pages/test_page.rst

@@ -5,7 +5,7 @@ This is a test page
 
 Just an image.
 
-.. image:: pictures/Fat_Cat.jpg
+.. image:: |filename|/pictures/Fat_Cat.jpg
    :height: 450 px
    :width: 600 px
    :alt: alternate text

samples/content/super_article.rst

@@ -16,12 +16,12 @@ This is a simple title
 
 And here comes the cool stuff_.
 
-.. image:: pictures/Sushi.jpg
+.. image:: |filename|/pictures/Sushi.jpg
    :height: 450 px
    :width: 600 px
    :alt: alternate text
 
-.. image:: pictures/Sushi_Macro.jpg
+.. image:: |filename|/pictures/Sushi_Macro.jpg
    :height: 450 px
    :width: 600 px
    :alt: alternate text

samples/content/unbelievable.rst

@@ -4,3 +4,6 @@ Unbelievable !
 :date: 2010-10-15 20:30
 
 Or completely awesome. Depends the needs.
+
+`a root-relative link to markdown-article <|filename|/cat1/markdown-article.md>`_
+`a file-relative link to markdown-article <|filename|cat1/markdown-article.md>`_