an option to clear last ssh quick connection (fixes #435, fixes #493)

terminus-ssh/src/components/sshModal.component.pug

@@ -9,11 +9,13 @@
     )
     
     .list-group.mt-3(*ngIf='lastConnection')
-        a.list-group-item.list-group-item-action((click)='connect(lastConnection)') 
+        a.list-group-item.list-group-item-action.d-flex.align-items-center((click)='connect(lastConnection)') 
             i.fa.fa-fw.fa-history
-            span {{lastConnection.name}}
+            .mr-auto {{lastConnection.name}}
+            button.btn.btn-outline-danger.btn-sm((click)='clearLastConnection(); $event.stopPropagation()')
+                i.fa.fa-trash-o
     
-    .list-group.mt-3.connections-list
+    .list-group.mt-3.connections-list(*ngIf='childGroups.length')
         ng-container(*ngFor='let group of childGroups') 
             .list-group-item.list-group-item-action.d-flex.align-items-center(
                 (click)='groupCollapsed[group.name] = !groupCollapsed[group.name]'