fix(about): fix missing widget headers

app/portainer/views/about/about.html

@@ -19,7 +19,7 @@
 <div class="row">
   <div class="col-sm-12">
     <rd-widget>
-      <rd-widget-header title="Help support portainer" icon="fa-heartbeat"></rd-widget-header>
+      <rd-widget-header title-text="Help support portainer" icon="fa-heartbeat"></rd-widget-header>
       <rd-widget-body>
       <div class="small" style="line-height:1.65;">
         <p>
@@ -48,7 +48,7 @@
 <div class="row">
   <div class="col-sm-12">
     <rd-widget>
-      <rd-widget-header title="Support and services" icon="fa-building"></rd-widget-header>
+      <rd-widget-header title-text="Support and services" icon="fa-building"></rd-widget-header>
       <rd-widget-body>
         <div class="small" style="line-height:1.65;">
           <p>
@@ -81,7 +81,7 @@
 <div class="row">
   <div class="col-sm-12">
     <rd-widget>
-      <rd-widget-header title="Limitations" icon="fa-plug"></rd-widget-header>
+      <rd-widget-header title-text="Limitations" icon="fa-plug"></rd-widget-header>
       <rd-widget-body>
       <div class="small">
         Portainer has full support for Docker >=1.10 and partial support for Docker 1.9 (some features may not be available).

app/portainer/views/support/support.html

@@ -9,7 +9,7 @@
 <div class="row">
   <div class="col-sm-12">
     <rd-widget>
-      <rd-widget-header title="Portainer support options" icon="fa-life-ring"></rd-widget-header>
+      <rd-widget-header title-text="Portainer support options" icon="fa-life-ring"></rd-widget-header>
       <rd-widget-body>
       <div class="small" style="line-height:1.65;">
         <p>