anchor.diff:  
   <div class="col-md-12 col-sm-12">
     <div class="form-actions-top">
  -    <button class="btn btn-primary btn-sm" v-on="click: submit()">
  +    <button class="btn btn-primary btn-sm" @click="submit()">
         <%= t('common.btn.save_changes') %>
       </button>
     </div>
  
positive.code: 
      <div class="col-sm-12 col-md-12">
        <div class="form-group">
          <select multiple="multiple" class="form-control admin-selectbox-height" v-model="selected_allowed_projects" number options="allowed_projects" v-on="dblclick: del()">
          </select>
        </div>
      </div>
  
      <div class="col-sm-12 col-md-12">
        <div class="form-group">
          <button class="btn btn-default" v-on="click: del()">
            <span class="glyphicon glyphicon-trash"></span>
          </button>
        </div>
  
negative.code:     <h5 class="page-header"><%=t('users.mfa')%></h5>
      <div v-if="user.mfa_use">
        <p><%=t('users.msg.mfa_used')%></p>
        <button class="btn btn-sm btn-default" @click="update_mfa()" :disabled="update_mfa_key || remove_mfa_key"><%=t('users.change_mfa_secret')%></button>
        <button class="btn btn-sm btn-danger"  @click="remove_mfa()" :disabled="update_mfa_key || remove_mfa_key"><%=t('users.use_stop_mfa')%></button>
      </div>
      <div v-else>
        <button class="btn btn-sm btn-primary" @click="update_mfa()"><%=t('users.use_start_mfa')%></button>
      </div>
  
      <div v-if="update_mfa_key">
  