[refs #64] some template fixes

app/views/wiki/_compare.html.haml

@@ -7,7 +7,7 @@
       %li.minibutton
         = form_tag revert_path(@project, @versions[0][0..6], @versions[1][0..6], @name),
             :name => "gollum-revert", :id => "gollum-revert-form" do
-          = revert_button
+          = revert_button if can? :write, @project
 
   = render :partial => 'diff_data', :collection => @diffs, :as => :diff
   .spacer
@@ -16,5 +16,5 @@
   %ul.actions
     - if action_name != 'revert'
       %li.minibutton
-        = revert_button
+        = revert_button if can? :write, @project
     %li.minibutton= link_to t("layout.wiki.back_to_top"), '#wiki'

app/views/wiki/_git_access.html.haml

@@ -2,7 +2,7 @@
   %ul.clone-urls
     %li.http-clone-url.selected
       = link_to t("layout.wiki.clones.http"), git_repo_url(@project.wiki_repo_name),
-          :'data-permissions' => (can? @project, :write) ? 'Read+Write' : 'Read'
+          :'data-permissions' => (can? :write, @project) ? 'Read+Write' : 'Read'
   %input.url-field{:type => 'text', :spellcheck => 'false'}
   %p.url-description
     %strong