ui: Mark locked theme as « Confidential »

frontend/ui/src/routes/[theme]/+page.svelte

@@ -19,6 +19,16 @@
 <Card class="niceborder text-indent mt-2 mb-4">
 
     <CardBody class="bg-dark text-light">
+        <div style="position: relative; display: inline-block;">
+            {#if $current_theme.locked}
+                <div style="position: absolute; z-index: 0; top: 0; bottom: 0; left: 0; right: 0;" class="d-flex justify-content-center align-items-center">
+                    <div style="transform: rotate(-25deg)">
+                        <div class="display-3 font-weight-bolder border border-danger text-danger px-3 py-1" style="opacity: 0.5; border-radius: 20px; border-width: 5px !important; font-family: 'Courier New'">
+                            CONFIDENTIEL
+                        </div>
+                    </div>
+                </div>
+            {/if}
             <Row>
                 <Col>
                 <p class="mt-4 mx-3 card-text lead text-justify">{@html $current_theme.headline}</p>
@@ -46,6 +56,7 @@
                     </Col>
                 {/if}
             </Row>
+        </div>
     </CardBody>
 
     {#if $current_theme.exercices}

libfic/theme_export.go

@@ -49,7 +49,7 @@ func ExportThemes() (interface{}, error) {
 				return nil, err
 			} else {
 				for _, exercice := range exercices {
-					if exercice.Disabled {
+					if exercice.Disabled && theme.Locked {
 						continue
 					}