Core: Set the default HAML output format to xhtml (DTACLOUD-472)
diff --git a/server/lib/cimi/collections/base.rb b/server/lib/cimi/collections/base.rb
index 30c595b..d999c18 100644
--- a/server/lib/cimi/collections/base.rb
+++ b/server/lib/cimi/collections/base.rb
@@ -43,6 +43,7 @@
     set :views, root + '/views/cimi'
     set :public_folder, root + '/public'
     set :documentation_class, CIMI
+    set :haml, :format => :xhtml
 
     error do
       report_error
diff --git a/server/lib/cimi/server.rb b/server/lib/cimi/server.rb
index d23b949..a1a9dc2 100644
--- a/server/lib/cimi/server.rb
+++ b/server/lib/cimi/server.rb
@@ -44,6 +44,7 @@
     enable :method_override
     disable :show_exceptions
     disable :dump_errors
+    set :haml, :format => :xhtml
 
     helpers Sinatra::Rabbit::URLFor(CIMI.collections)
 
diff --git a/server/lib/deltacloud/collections/base.rb b/server/lib/deltacloud/collections/base.rb
index 6562448..fe8ba2b 100644
--- a/server/lib/deltacloud/collections/base.rb
+++ b/server/lib/deltacloud/collections/base.rb
@@ -38,6 +38,7 @@
     set :public_folder, root + '/public'
     # A class where the Rabbit will look up for 'collections'
     set :documentation_class, Deltacloud
+    set :haml, :format => :xhtml
 
     error do
       report_error
diff --git a/server/lib/deltacloud/server.rb b/server/lib/deltacloud/server.rb
index 7c2b7bf..0ef925f 100644
--- a/server/lib/deltacloud/server.rb
+++ b/server/lib/deltacloud/server.rb
@@ -42,6 +42,7 @@
     helpers Sinatra::Rabbit::URLFor(Deltacloud.collections)
 
     set :config, Deltacloud[:deltacloud]
+    set :haml, :format => :xhtml
 
     get '/' do
       if params[:force_auth]