Move multi-file-commit class from resizable_panel

app/assets/javascripts/ide/components/ide_side_bar.vue

@@ -37,7 +37,7 @@ export default {
 </script>
 
 <template>
-  <resizable-panel :initial-width="340" side="left" class="flex-column">
+  <resizable-panel :initial-width="340" side="left" class="multi-file-commit-panel flex-column">
     <template v-if="loading">
       <div class="multi-file-commit-panel-inner">
         <div v-for="n in 3" :key="n" class="multi-file-loading-container">

app/assets/javascripts/ide/components/resizable_panel.vue

@@ -45,7 +45,7 @@ export default {
 </script>
 
 <template>
-  <div :style="panelStyle" class="multi-file-commit-panel">
+  <div :style="panelStyle">
     <slot></slot>
     <panel-resizer
       :size.sync="width"