add empty state to history

src/Umbraco.Web.UI.Client/src/less/components/umb-empty-state.less

@@ -6,7 +6,7 @@
 }
 
 .umb-empty-state.-small {
-	font-size: @fontSizeSmall;
+	font-size: 14px;
 }
 
 .umb-empty-state.-large {

src/Umbraco.Web.UI.Client/src/views/components/content/umb-content-node-info.html

@@ -25,6 +25,14 @@
                     <div ng-if="loadingAuditTrail" style="background: rgba(255, 255, 255, 0.8); position: absolute; top: 0; left: 0; right: 0; bottom: 0;"></div>
                     <umb-load-indicator ng-if="loadingAuditTrail"></umb-load-indicator>
                     
+                    <div ng-if="auditTrail.length === 0" style="padding: 10px;">
+                        <umb-empty-state
+                            position="center"
+                            size="small">
+                            <localize key="content_noChanges"></localize>
+                        </umb-empty-state>
+                    </div>
+                    
                     <div class="history-item" ng-repeat="item in auditTrail" ng-class="{'last-history-item': $last}">
                         <div class="history-row">
                         

src/Umbraco.Web.UI/umbraco/config/lang/en_us.xml

@@ -182,6 +182,7 @@
     <key alias="membergroup">Member Group</key>
     <key alias="memberrole">Role</key>
     <key alias="membertype">Member Type</key>
+    <key alias="noChanges">No changes have been made</key>
     <key alias="noDate">No date chosen</key>
     <key alias="nodeName">Link title</key>
     <key alias="otherElements">Properties</key>