PLT-4459 Fixed not being able to scroll on mobile after autocomplete is shown (#4464)

* Fixed not being able to scroll on mobile after autocomplete is shown

* Fixed SuggestionLists not being scrollable on iOS

webapp/sass/components/_popover.scss

@@ -79,6 +79,7 @@
         .popover-content {
             padding: 10px;
             position: relative;
+            -webkit-overflow-scrolling: touch;
         }
     }
 

webapp/sass/components/_suggestion-list.scss

@@ -19,6 +19,7 @@
     overflow-y: scroll;
     padding-bottom: 5px;
     width: 100%;
+    -webkit-overflow-scrolling: touch;
 
     .command {
         border-bottom: 1px solid $light-gray;

webapp/sass/responsive/_mobile.scss

@@ -107,14 +107,6 @@
         margin-right: 0 !important;
     }
 
-    #post-list {
-        .post-list-holder-by-time {
-            .modal-open & {
-                @include clearfix;
-            }
-        }
-    }
-
     .post-code__language {
         @include opacity(.6);
         @include transition(none);