diffs: show copy-to-clipboard next to diff files

rhodecode/public/css/code-block.less

@@ -665,8 +665,9 b' input.filediff-collapse-state {'
             width: 0;
             height: 0;
             border-style: solid;
-            border-width: 6.5px 0 6.5px 11.3px;
-            border-color: transparent transparent transparent  #ccc;
+            border-width: 4.5px 0 4.5px 9.3px;
+            border-color: transparent transparent transparent  #aaa;
+            margin: 6px 0px;
         }
         .filediff-menu {
             display: none;
@@ -679,8 +680,10 b' input.filediff-collapse-state {'
             width: 0;
             height: 0;
             border-style: solid;
-            border-width: 11.3px 6.5px 0 6.5px;
-            border-color: #ccc transparent transparent transparent;
+            border-width: 9.3px 4.5px 0 4.5px;
+            border-color: #aaa transparent transparent transparent;
+            margin: 6px 0px;
+
         }
         .filediff-menu {
             display: block;

rhodecode/templates/codeblocks/diffs.mako

@@ -326,22 +326,28 b' from rhodecode.lib.diffs import NEW_FILE'
                  ## file was renamed, or copied
                 %if RENAMED_FILENODE in filediff.patch['stats']['ops']:
                     <strong>${filediff.target_file_path}</strong> ⬅ <del>${filediff.source_file_path}</del>
+                    <% final_path = filediff.target_file_path %>
                 %elif COPIED_FILENODE in filediff.patch['stats']['ops']:
                     <strong>${filediff.target_file_path}</strong> ⬅ ${filediff.source_file_path}
+                    <% final_path = filediff.target_file_path %>
                 %endif
             %else:
                 ## file was modified
                 <strong>${filediff.source_file_path}</strong>
+                <% final_path = filediff.source_file_path %>
             %endif
         %else:
             %if filediff.source_file_path:
                 ## file was deleted
                 <strong>${filediff.source_file_path}</strong>
+                <% final_path = filediff.source_file_path %>
             %else:
                 ## file was added
                 <strong>${filediff.target_file_path}</strong>
+                <% final_path = filediff.target_file_path %>
             %endif
         %endif
+        <i style="color: #aaa" class="tooltip icon-clipboard clipboard-action" data-clipboard-text="${final_path}" title="${_('Copy the full path')}" onclick="return false;"></i>
     </span>
     <span class="pill-group" style="float: left">
         %if filediff.limited_diff: