diff --git a/README.md b/README.md
index 7713fe86..b65eb8a6 100644
--- a/README.md
+++ b/README.md
@@ -226,20 +226,24 @@ instance is stopped.
 
 5. Initialize/Update database:
 
-    `RAILS_ENV=production bundle exec rake redmine:plugins:migrate NAME=redmine_dmsf`
+   `RAILS_ENV=production bundle exec rake redmine:plugins:migrate NAME=redmine_dmsf`
 
-6. The access rights must be set for web server, e.g.: 
+6. Install assets
+
+   `RAILS_ENV="production" bundle exec rake assets:precompile`
+
+7. The access rights must be set for web server, e.g.: 
 
     `chown -R www-data:www-data plugins/redmine_dmsf`.
 
-7. Restart the web server, e.g.: 
+8. Restart the web server, e.g.: 
 
     `systemctl restart apache2`
 
-8. You should configure the plugin via Redmine interface: Administration -> Plugins -> DMSF -> Configure. (You should check and then save the plugin's configuration after each upgrade.)
-9. Don't forget to grant permissions for DMSF in Administration -> Roles and permissions
-10. Assign DMSF permissions to appropriate roles.
-11. There are a few rake tasks:
+9. You should configure the plugin via Redmine interface: Administration -> Plugins -> DMSF -> Configure. (You should check and then save the plugin's configuration after each upgrade.)
+10. Don't forget to grant permissions for DMSF in Administration -> Roles and permissions
+11. Assign DMSF permissions to appropriate roles.
+12. There are a few rake tasks:
 
     I) To convert documents from the standard Redmine document module
 
diff --git a/app/views/dmsf/edit.html.erb b/app/views/dmsf/edit.html.erb
index 1e4c6c88..08855288 100644
--- a/app/views/dmsf/edit.html.erb
+++ b/app/views/dmsf/edit.html.erb
@@ -125,7 +125,7 @@
         <br>
       <% end %>
       <span class="search_for_watchers">
-        <%= link_to l(:label_user_search_add),
+        <%= link_to sprite_icon('add', l(:label_search_for_watchers), size: 12),
           new_dmsf_folder_permissions_path(project_id: @project, dmsf_folder_id: @folder),
           remote: true,
           method: :get %>
diff --git a/app/views/dmsf/trash.html.erb b/app/views/dmsf/trash.html.erb
index d6efeb9b..fd051282 100644
--- a/app/views/dmsf/trash.html.erb
+++ b/app/views/dmsf/trash.html.erb
@@ -22,7 +22,7 @@
 
 <div class="contextual">
   <% if @file_delete_allowed %>
-    <%= link_to sprite_icon('del', l(:label_empty_trash_bin)), empty_trash_path(id: @project), class: 'icon icon-del' %>
+    <%= delete_link empty_trash_path(id: @project), {}, l(:label_empty_trash_bin) %>
   <% end %>
 </div>
 
diff --git a/app/views/dmsf_context_menus/_revision_actions.html.erb b/app/views/dmsf_context_menus/_revision_actions.html.erb
index 44de9aaf..012c7912 100644
--- a/app/views/dmsf_context_menus/_revision_actions.html.erb
+++ b/app/views/dmsf_context_menus/_revision_actions.html.erb
@@ -30,8 +30,9 @@
             obsolete_revision_path(revision),
             data: { confirm: l(:text_are_you_sure) },
             class: 'icon icon-close dmsf-revision-action-button' if file_manipulation_allowed && (revision.workflow == DmsfWorkflow::STATE_APPROVED) %>
-<%= link_to sprite_icon('del', l(:button_delete)),
-            delete_revision_path(revision),
-            data: { confirm: l(:text_are_you_sure) },
-            title: l(:title_delete_revision),
-            class: 'icon icon-del dmsf-revision-action-button' if file_delete_allowed && (file.dmsf_file_revisions.visible.count > 1) %>
+<% if file_delete_allowed && (file.dmsf_file_revisions.visible.count > 1) %>
+  <%= delete_link delete_revision_path(revision),
+                  { data: { confirm: l(:text_are_you_sure) },
+                    title: l(:title_delete_revision),
+                    class: 'icon icon-del dmsf-revision-action-button' } %>
+<% end %>
\ No newline at end of file
diff --git a/app/views/dmsf_files/_version_selector.html.erb b/app/views/dmsf_files/_version_selector.html.erb
index e5393f3a..940afdf2 100644
--- a/app/views/dmsf_files/_version_selector.html.erb
+++ b/app/views/dmsf_files/_version_selector.html.erb
@@ -38,9 +38,9 @@
     <% minor_version = '' %>
   <% end %>
   <%= select_tag select_tag_name_minor,
-        options_for_select(DmsfUploadHelper::minor_version_select_options, minor_version),
-        class: 'dmsf-select-version' %>
+                 options_for_select(DmsfUploadHelper::minor_version_select_options, minor_version),
+                 class: 'dmsf-select-version' %>
   <b>.</b>
-  <%= select_tag select_tag_name_patch, options_for_select(DmsfUploadHelper::patch_version_select_options,
-    [h('&nbsp;'), '']), class: 'dmsf-select-version' %>
+  <%= select_tag select_tag_name_patch, options_for_select(DmsfUploadHelper::patch_version_select_options, ' '),
+                 class: 'dmsf-select-version' %>
 <% end %>
diff --git a/assets/images/jstoolbar/bt_dmsf.png b/assets/images/jstoolbar/bt_dmsf.png
deleted file mode 100644
index 51ef5b19..00000000
Binary files a/assets/images/jstoolbar/bt_dmsf.png and /dev/null differ
diff --git a/assets/stylesheets/redmine_dmsf.css b/assets/stylesheets/redmine_dmsf.css
index ee9a5ad2..3de2a63f 100644
--- a/assets/stylesheets/redmine_dmsf.css
+++ b/assets/stylesheets/redmine_dmsf.css
@@ -394,5 +394,5 @@ div.dmsf-scroll {
 
 /* Wiki toolbar */
 .jstb_dmsf {
-    background-image: url("../images/jstoolbar/bt_dmsf.png");
+    background-image: url("/document.png");
 }
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index fa60f7fc..11795207 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -54,7 +54,7 @@ if Redmine::Plugin.installed? 'redmine_dmsf'
     post '/projects/dmsf/append_email', to: 'dmsf#append_email', as: 'append_email_dmsf'
     get '/projects/dmsf/autocomplete_for_user', to: 'dmsf#autocomplete_for_user'
     put '/projects/:id/dmsf', controller: 'dmsf', action: 'drop'
-    get '/projects/:id/dmsf/empty_trash', to: 'dmsf#empty_trash', as: 'empty_trash'
+    delete '/projects/:id/dmsf/empty_trash', to: 'dmsf#empty_trash', as: 'empty_trash'
     get '/dmsf', to: 'dmsf#index', as: 'dmsf_index'
     get '/dmsf/digest', to: 'dmsf#digest', as: 'dmsf_digest'
     post '/dmsf/digest', to: 'dmsf#reset_digest', as: 'dmsf_reset_digest'
@@ -114,7 +114,7 @@ if Redmine::Plugin.installed? 'redmine_dmsf'
     get '/dmsf/files/:id/unlock', controller: 'dmsf_files', action: 'unlock', as: 'unlock_dmsf_files'
     post '/dmsf/files/:id/delete', controller: 'dmsf_files', action: 'delete', as: 'delete_dmsf_files'
     post '/dmsf/files/:id/revision/create', controller: 'dmsf_files', action: 'create_revision'
-    get '/dmsf/files/:id/revision/delete', controller: 'dmsf_files', action: 'delete_revision', as: 'delete_revision'
+    delete '/dmsf/files/:id/revision/delete', controller: 'dmsf_files', action: 'delete_revision', as: 'delete_revision'
     get '/dmsf/files/:id/revision/obsolete', controller: 'dmsf_files',
                                              action: 'obsolete_revision',
                                              as: 'obsolete_revision'
diff --git a/test/functional/dmsf_controller_test.rb b/test/functional/dmsf_controller_test.rb
index 916c91a2..a25ac74a 100644
--- a/test/functional/dmsf_controller_test.rb
+++ b/test/functional/dmsf_controller_test.rb
@@ -106,7 +106,7 @@ class DmsfControllerTest < RedmineDmsf::Test::TestCase
 
   def test_empty_trash
     post '/login', params: { username: 'jsmith', password: 'jsmith' }
-    get "/projects/#{@project1.id}/dmsf/empty_trash"
+    delete "/projects/#{@project1.id}/dmsf/empty_trash"
     assert_equal 0, DmsfFolder.deleted.where(project_id: @project1.id).all.size
     assert_equal 0, DmsfFile.deleted.where(project_id: @project1.id).all.size
     assert_equal 0, DmsfLink.deleted.where(project_id: @project1.id).all.size
@@ -117,7 +117,7 @@ class DmsfControllerTest < RedmineDmsf::Test::TestCase
     # Missing permissions
     post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @role_manager.remove_permission! :file_delete
-    get "/projects/#{@project1.id}/dmsf/empty_trash"
+    delete "/projects/#{@project1.id}/dmsf/empty_trash"
     assert_response :forbidden
   end