improve settings components and scss

src/components/settings/AdminSaveButton.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="side-menu-setting-save">
+  <div class="cm-settings-btn cm-settings-btn--save">
     <NcButton
       variant="success"
       @click="save"

src/components/settings/SettingsSection.vue

@@ -15,7 +15,20 @@ You should have received a copy of the GNU Affero General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 -->
 <template>
-  <div class="cs-settings-section">
+  <div
+    class="cm-settings-section"
+    :class="{'cm-settings-section--hidden': hidden}"
+  >
     <slot></slot>
   </div>
 </template>
+
+<script setup>
+defineProps({
+  hidden: {
+    type: Boolean,
+    required: false,
+    default: false,
+  }
+})
+</script>

src/components/settings/UserSaveButton.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="side-menu-setting-save">
+  <div class="cm-settings-btn cm-settings-btn--save">
     <NcButton
       variant="success"
       @click="save"