Add icon to Lademodus in standard_legacy theme (#2813)

* Add icon to Lademodus in standard_legacy theme

* Use hexagon-nodes-bolt as lademodus icon

Author: jarus

packages/modules/web_themes/standard_legacy/web/index.html

@@ -500,7 +500,10 @@
 							<!-- Lademodus -->
 							<div class="form-row mb-1">
 								<div class="col">
-									<label class="col-form-label">Lademodus</label>
+									<label class="col-form-label">
+										<i class="fas fa-hexagon-nodes-bolt"></i>
+										Lademodus
+									</label>
 								</div>
 								<div class="col-md-8 btn-group btn-group-toggle charge-point-charge-mode"
 									data-toggle="buttons" data-name="chargemode"