Hide info icon on mobile and make text input equal widths (while a single date spans the whole width)

frontend/src/app/shared/components/datepicker/datepicker_mobile.modal.sass

@@ -3,4 +3,4 @@
     height: initial
     width: calc(100vw - 2rem)
     &--dates-container
-      grid-template-columns: 1fr auto
+      grid-template-columns: 1fr max-content

frontend/src/app/shared/components/modal/modal-banner/modal-banner.component.html

@@ -5,7 +5,7 @@
 >
   <span
     *ngIf="type === 'info'"
-    class="op-modal-banner--icon spot-icon spot-icon_info1"
+    class="op-modal-banner--icon spot-icon spot-icon_info1 hidden-for-mobile"
   ></span>
   <span
     *ngIf="type === 'warning'"