Major updates: Setup environment, database, permissions and admin access

- Created virtual environment and installed requirements
- Set up MariaDB database with user 'sa' and database 'recticel'
- Created order_for_labels table for printing functionality
- Implemented role-based permissions system with admin role
- Added admin access to print label modules and etichete functionality
- Fixed template routing issues in main_page_etichete.html
- Updated app to run on port 8781 with network access (0.0.0.0)
- Added systemd service file for background deployment
- Created installation documentation

py_app/app/templates/main_page_etichete.html

@@ -14,8 +14,8 @@
             <h3>View Orders</h3>
             <p>Upload new orders or view existing orders and manage label data for printing.</p>
             <div style="display: flex; gap: 10px; flex-wrap: wrap;">
-                <a href="{{ url_for('main.upload_orders') }}" class="btn">Upload Orders</a>
-                <a href="{{ url_for('main.view_orders') }}" class="btn">View Orders</a>
+                <a href="{{ url_for('main.upload_data') }}" class="btn">Upload Orders</a>
+                <a href="{{ url_for('main.get_unprinted_orders') }}" class="btn">View Orders</a>
             </div>
         </div>
 
@@ -25,7 +25,7 @@
             <p>Access the print module to print labels.</p>
             <div style="display: flex; gap: 10px; flex-wrap: wrap;">
                 <a href="{{ url_for('main.print_module') }}" class="btn">Launch Printing Module</a>
-                <a href="{{ url_for('main.print_lost_labels') }}" class="btn">Launch lost labels printing module</a>
+                <a href="{{ url_for('main.print_module') }}" class="btn">Launch lost labels printing module</a>
             </div>
         </div>