Refactor navigation and enhance director information display

- Removed the directors section from the navigation menu for a cleaner interface.
- Updated the FalukantService to include additional attributes for directors, such as knowledges and region.
- Enhanced the DirectorInfo component to display detailed information, including knowledge and income management features.
- Implemented tab navigation in BranchView for better organization of director, inventory, production, and storage sections.
- Updated localization files to reflect changes in navigation and tab labels.

frontend/src/components/falukant/SaleSection.vue

@@ -1,6 +1,5 @@
 <template>
     <div class="sale-section">
-      <h3>{{ $t('falukant.branch.sale.title') }}</h3>
       <!-- Beispielhafte Inventar-Tabelle -->
       <div v-if="inventory.length > 0" class="inventory-table">
         <table>