[skip ci] col-*-push and col-*-pull => order-*

app/assets/javascripts/boards/components/modal/empty_state.js

@@ -41,10 +41,10 @@ gl.issueBoards.ModalEmptyState = Vue.extend({
   template: `
     <section class="empty-state">
       <div class="row">
-        <div class="col-xs-12 col-sm-6 col-sm-push-6">
+        <div class="col-xs-12 col-sm-6 order-sm-last">
           <aside class="svg-content"><img :src="emptyStateSvg"/></aside>
         </div>
-        <div class="col-xs-12 col-sm-6 col-sm-pull-6">
+        <div class="col-xs-12 col-sm-6 order-sm-first">
           <div class="text-content">
             <h4>{{ contents.title }}</h4>
             <p v-html="contents.content"></p>

app/assets/javascripts/vue_merge_request_widget/components/states/nothing_to_merge.vue

@@ -18,10 +18,10 @@ export default {
 <template>
   <div class="mr-widget-body mr-widget-empty-state">
     <div class="row">
-      <div class="artwork col-sm-5 col-sm-push-7 col-12 text-center">
+      <div class="artwork col-md-5 order-md-last col-12 text-center">
         <span v-html="emptyStateSVG"></span>
       </div>
-      <div class="text col-sm-7 col-sm-pull-5 col-12">
+      <div class="text col-md-7 order-md-first col-12">
         <span>
           Merge requests are a place to propose changes you have made to a project
           and discuss those changes with others.

app/views/admin/conversational_development_index/_disabled.html.haml

 .container.convdev-empty
-  .col-sm-6.col-sm-push-3.text-center
+  .col-sm-12.justify-content-center.text-center
     = custom_icon('convdev_no_index')
     %h4 Usage ping is not enabled
     %p

app/views/admin/conversational_development_index/_no_data.html.haml

 .container.convdev-empty
-  .col-sm-6.col-sm-push-3.text-center
+  .col-sm-12.justify-content-center.text-center
     = custom_icon('convdev_no_data')
     %h4 Data is still calculating...
     %p