minor #8717 Remove svn & changelog articles (weaverryan)

This PR was squashed before being merged into the 4.0 branch (closes #8717).

Discussion
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Remove svn & changelog articles

On 4.0, I want to reduce old entries. This removes the svn article, and removes the changelog, which was a cool idea, but is not updated anymore.

Commits
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e84c0e0 Remove svn & changelog articles

Author: xabbuh

_build/redirection_map

@@ -283,7 +283,8 @@
 /cookbook/workflow/homestead /setup/homestead
 /cookbook/workflow/index /setup
 /cookbook/workflow/new_project_git /setup/new_project_git
-/cookbook/workflow/new_project_svn /setup/new_project_svn
+/cookbook/workflow/new_project_svn /setup/new_project_git
+/setup/new_project_svn /setup/new_project_git
 /components/asset/index /components/asset
 /components/asset/introduction /components/asset
 /components/browser_kit/index /components/browser_kit