[Rollups] Fix time field not being recognized due to ordering of aggs

src/core_plugins/kibana/public/management/sections/indices/create_index_pattern_wizard/components/header/__jest__/__snapshots__/header.test.js.snap

@@ -2,9 +2,6 @@
 
 exports[`Header should render normally 1`] = `
 <div>
-  <EuiSpacer
-    size="m"
-  />
   <EuiTitle
     size="m"
   >
@@ -59,9 +56,6 @@ exports[`Header should render normally 1`] = `
 
 exports[`Header should render without including system indices 1`] = `
 <div>
-  <EuiSpacer
-    size="m"
-  />
   <EuiTitle
     size="m"
   >

src/core_plugins/kibana/public/management/sections/indices/create_index_pattern_wizard/components/header/header.js

@@ -39,7 +39,6 @@ export const Header = ({
   onChangeIncludingSystemIndices,
 }) => (
   <div>
-    <EuiSpacer size="m"/>
     <EuiTitle>
       <h1>
         <FormattedMessage

src/core_plugins/kibana/public/management/sections/indices/edit_index_pattern/edit_index_pattern.html

@@ -3,7 +3,6 @@
     <div
       ng-controller="managementIndicesEdit"
       data-test-subj="editIndexPattern"
-      class="kuiViewContent"
       role="region"
       aria-label="{{::'kbn.management.editIndexPattern.detailsAria' | i18n: { defaultMessage: 'Index pattern details' } }}"
     >

x-pack/plugins/rollup/server/routes/api/index_patterns.js

@@ -69,23 +69,44 @@ export function registerFieldsForWildcardRoute(server) {
             readFromDocValues: true,
           };
 
-          rollupFields.push(
-            ...fields
-              // For each field of the aggregation, filter out ones that have already been added
-              // to the field list bcause the same field can be part of multiple aggregations, but
-              // end consumption doesn't differentiate fields based on their aggregation abilities.
-              .filter(field => !rollupFieldNames.includes(field))
-              // Then expand each field into object format that end consumption expects.
-              .map(field => {
-                const fieldCapsKey = `${field}.${agg}.${agg === 'date_histogram' ? 'timestamp' : 'value'}`;
-                rollupFieldNames.push(field);
-                return {
-                  ...fieldsFromFieldCapsApi[fieldCapsKey],
-                  ...defaultField,
-                  name: field,
-                };
-              })
-          );
+          // Date histogram agg only ever has one field defined, let date type overwrite a
+          // previous type if defined (such as number from max and min aggs).
+          if(agg === 'date_histogram') {
+            const timeFieldName = fields[0];
+            const fieldCapsKey = `${timeFieldName}.${agg}.timestamp`;
+            const newField = {
+              ...fieldsFromFieldCapsApi[fieldCapsKey],
+              ...defaultField,
+              name: timeFieldName,
+            };
+            const existingField = rollupFields.find(field => field.name === timeFieldName);
+
+            if(existingField) {
+              Object.assign(existingField, newField);
+            } else {
+              rollupFieldNames.push(timeFieldName);
+              rollupFields.push(newField);
+            }
+          }
+          // For all other aggs, filter out ones that have already been added to the field list
+          // because the same field can be part of multiple aggregations, but end consumption
+          // doesn't differentiate fields based on their aggregation abilities.
+          else {
+            rollupFields.push(
+              ...fields
+                .filter(field => !rollupFieldNames.includes(field))
+                .map(field => {
+                  // Expand each field into object format that end consumption expects.
+                  const fieldCapsKey = `${field}.${agg}.value`;
+                  rollupFieldNames.push(field);
+                  return {
+                    ...fieldsFromFieldCapsApi[fieldCapsKey],
+                    ...defaultField,
+                    name: field,
+                  };
+                })
+            );
+          }
         });
 
         return {