images: rename 'attachment' icon to 'attached'

This avoids conflicts with the 'attachment' component.

app/assets/stylesheets/new_design/icons.scss

@@ -59,8 +59,8 @@
     background-image: image-url("icons/bubble.svg");
   }
 
-  &.attachment {
-    background-image: image-url("icons/attachment.svg");
+  &.attached {
+    background-image: image-url("icons/attached.svg");
   }
 
   &.preview {

app/views/instructeurs/dossiers/_header_actions.html.haml

@@ -10,7 +10,7 @@
 - if !PiecesJustificativesService.liste_pieces_justificatives(dossier).empty?
   %span.dropdown.print-menu-opener
     %button.button.dropdown-button.icon-only
-      %span.icon.attachment
+      %span.icon.attached
     %ul.print-menu.dropdown-content
       %li
         - if PiecesJustificativesService.pieces_justificatives_total_size(dossier) < Dossier::TAILLE_MAX_ZIP

app/views/root/patron.html.haml

@@ -14,7 +14,7 @@
     %span.icon.edit
     %span.icon.in-progress
     %span.icon.bubble
-    %span.icon.attachment
+    %span.icon.attached
     %span.icon.lock
     %span.icon.add
     %span.icon.justificatif

app/views/shared/attachment/_show.html.haml

@@ -8,7 +8,7 @@
 .attachment-link{ 'data-attachment-id': attachment.id, 'data-attachment-check-url': attachment_check_url }
   - if should_display_link
     = link_to url_for(attachment.blob), target: '_blank', rel: 'noopener',  title: "Télécharger la pièce jointe" do
-      %span.icon.attachment
+      %span.icon.attached
       = attachment.filename.to_s
     - if !attachment.virus_scanner.started?
       (ce fichier n’a pas été analysé par notre antivirus, téléchargez-le avec précaution)