Better title format for wiki page

The title format for wiki page may be unintelligible.
For example 'GitLab' is converted to 'Git Lab', 'MySQL' is converted to
'My Sql', etc.

app/models/wiki_page.rb

@@ -47,7 +47,11 @@ class WikiPage
   # The formatted title of this page.
   def title
-    @attributes[:title] || ""
+    if @attributes[:title]
+      @attributes[:title].gsub(/-+/, ' ')
+    else
+      ""
+    end
   end
   # Sets the title of this page.

app/views/projects/wikis/edit.html.haml

@@ -3,7 +3,7 @@
   = render 'main_links'
 %h3.page-title
   Editing -
-  %span.light #{@page.title.titleize}
+  %span.light #{@page.title}
 %hr
 = render 'form'

app/views/projects/wikis/history.html.haml

 = render 'nav'
 %h3.page-title
   %span.light History for
-  = link_to @page.title.titleize, project_wiki_path(@project, @page)
+  = link_to @page.title, project_wiki_path(@project, @page)
 %table.table
   %thead

app/views/projects/wikis/pages.html.haml

@@ -5,7 +5,7 @@
   - @wiki_pages.each do |wiki_page|
     %li
       %h4
-        = link_to wiki_page.title.titleize, project_wiki_path(@project, wiki_page)
+        = link_to wiki_page.title, project_wiki_path(@project, wiki_page)
         %small (#{wiki_page.format})
         .pull-right
           %small Last edited #{time_ago_with_tooltip(wiki_page.commit.created_at)}

app/views/projects/wikis/show.html.haml

 = render 'nav'
 %h3.page-title
-  = @page.title.titleize
+  = @page.title
   = render 'main_links'
 - if @page.historical?
   .warning_message

features/steps/project/wiki.rb

@@ -83,7 +83,7 @@ class Spinach::Features::ProjectWiki < Spinach::FeatureSteps
   Then 'I should see the existing page in the pages list' do
     page.should have_content current_user.name
-    page.should have_content @page.title.titleize
+    page.should have_content @page.title
   end
   def wiki

spec/models/wiki_page_spec.rb

@@ -155,4 +155,20 @@ describe WikiPage do
     end
   end
+  describe "#title" do
+    before do
+      create_page("Title", "content")
+      @page = wiki.find_page("Title")
+    end
+
+    after do
+      destroy_page("Title")
+    end
+
+    it "should be replace a hyphen to a space" do
+      @page.title = "Import-existing-repositories-into-GitLab"
+      @page.title.should == "Import existing repositories into GitLab"
+    end
+  end
+
 end