Bug 1291000 - size #autotagPrefix based on font size. ui-r=Paenglab, r=alta88

mail/themes/linux/mail/newsblog/feed-subscriptions.css

@@ -28,7 +28,7 @@
 }
 
 #autotagPrefix {
-  width: 300px;
+  width: 35ch;
 }
 
 #nameValue,

mail/themes/osx/mail/newsblog/feed-subscriptions.css

@@ -23,7 +23,7 @@
 }
 
 #autotagPrefix {
-  width: 300px;
+  width: 35ch;
 }
 
 treechildren::-moz-tree-image(folderNameCol, isFeed-true) {

mail/themes/windows/mail/newsblog/feed-subscriptions.css

@@ -35,7 +35,7 @@
 }
 
 #autotagPrefix {
-  width: 300px;
+  width: 35ch;
 }
 
 #nameValue,

mailnews/extensions/newsblog/content/am-newsblog.xul

@@ -33,10 +33,11 @@
   <script type="application/javascript"
           src="chrome://messenger/content/am-prefs.js"/>
 
+  <vbox flex="1" style="overflow: auto;">
 
-  <dialogheader id="am-newsblog-title" defaultTitle="&accountTitle.label;"/>
+    <dialogheader id="am-newsblog-title" defaultTitle="&accountTitle.label;"/>
 
-  <description class="secDesc">&accountSettingsDesc.label;</description>
+    <description class="secDesc">&accountSettingsDesc.label;</description>
 
     <hbox align="center">
       <label value="&accountName.label;"
@@ -150,4 +151,5 @@
               accesskey="&manageSubscriptions.accesskey;"
               oncommand="openSubscriptionsDialog(gServer.rootFolder);"/>
     </hbox>
+  </vbox>
 </page>

suite/themes/classic/messenger/newsblog/feed-subscriptions.css

@@ -26,5 +26,5 @@
 }
 
 #autotagPrefix {
-  width: 300px;
+  width: 35ch;
 }

suite/themes/modern/messenger/newsblog/feed-subscriptions.css

@@ -26,5 +26,5 @@
 }
 
 #autotagPrefix {
-  width: 300px;
+  width: 35ch;
 }