[Frontend] Fixed bug that gave a bad redirect on page edit.

lib/gollum/frontend/app.rb

@@ -57,7 +57,7 @@ module Precious
     post '/edit/*' do
       wiki = Gollum::Wiki.new(settings.gollum_path, settings.wiki_options)
       page = wiki.page(params[:splat].first)
-      name = params[:rename]
+      name = params[:rename] || params[:page]
       committer = Gollum::Committer.new(wiki, commit_message)
       commit    = {:committer => committer}
 

test/test_app.rb

@@ -36,8 +36,9 @@ context "Frontend" do
     side_1  = page_1.sidebar
 
     post "/edit/A",
-      :footer => 'footer', :sidebar => 'sidebar', :message => 'def'
+      :footer => 'footer', :page => "A", :sidebar => 'sidebar', :message => 'def'
     follow_redirect!
+    assert_equal "/A", last_request.fullpath
     assert last_response.ok?
 
     @wiki.clear_cache
@@ -62,6 +63,7 @@ context "Frontend" do
       :rename => "C",
       :format => page_1.format, :message => 'def'
     follow_redirect!
+    assert_equal "/C", last_request.fullpath
     assert last_response.ok?
 
     @wiki.clear_cache
@@ -139,4 +141,4 @@ context "Frontend" do
   def app
     Precious::App
   end
-end
+end