Update title to titleText in Host and Admin page

ui/src/admin/containers/chronograf/AdminChronografPage.js

@@ -50,7 +50,7 @@ const sections = me => [
 
 const AdminChronografPage = ({me, source, params: {tab}}) => (
   <div className="page">
-    <PageHeader title="Chronograf Admin" />
+    <PageHeader titleText="Chronograf Admin" />
     <FancyScrollbar className="page-contents">
       <div className="container-fluid">
         <SubSections

ui/src/hosts/containers/HostsPage.js

@@ -116,7 +116,7 @@ export class HostsPage extends Component {
       <div className="page hosts-list-page">
         <PageHeader
           titleText="Host List"
-          optionsComponents={this.optionsComponents}
+          optionsComponents={this.optionsComponents()}
           sourceIndicator={true}
         />
         <div className="page-contents">