Provide better user experience with different icon

@ogerly I changed the icon to use a normal eye if you want to release
the contribution. Changing visual state usually improves user
experience.

webapp/components/ContentMenu.vue

@@ -112,7 +112,7 @@ export default {
             callback: () => {
               this.openModal('release', this.resource.id)
             },
-            icon: 'eye-slash',
+            icon: 'eye',
           })
         }
       }