CC-3718: Please enable user to input the mail server settings

-done

airtime_mvc/public/js/airtime/preferences/preferences.js

@@ -11,13 +11,61 @@ function showErrorSections() {
     }
 }
 
+function setConfigureMailServerListener() {
+    var configMailServer = $("#configureMailServer");
+    configMailServer.click(function(event){
+        setMailServerInputReadonly();
+    })
+}
+
+function setEnableSystemEmailsListener() {
+    var enableSystemEmails = $("#enableSystemEmail");
+    enableSystemEmails.click(function(event){
+        setSystemFromEmailReadonly();
+    })
+}
+
+function setSystemFromEmailReadonly() {
+    var enableSystemEmails = $("#enableSystemEmail");
+    var systemFromEmail = $("#systemEmail");
+    if ($(enableSystemEmails).is(':checked')) {
+        systemFromEmail.removeAttr("readonly");	
+    } else {
+        systemFromEmail.attr("readonly", "readonly");
+    }	
+}
+
+function setMailServerInputReadonly() {
+    var configMailServer = $("#configureMailServer");
+    var mailServer = $("#mailServer");
+    var email = $("#email");
+    var password = $("#ms_password");
+    var port = $("#port");
+    if ($(configMailServer).is(':checked')) {
+        mailServer.removeAttr("readonly");
+        email.removeAttr("readonly");
+        password.removeAttr("readonly");
+        port.removeAttr("readonly");
+    } else {
+        mailServer.attr("readonly", "readonly");
+        email.attr("readonly", "readonly");
+        password.attr("readonly", "readonly");
+        port.attr("readonly", "readonly");
+    }
+}
+
 $(document).ready(function() {
 
-	$('.collapsible-header').live('click',function() {
+    $('.collapsible-header').live('click',function() {
         $(this).next().toggle('fast');
         $(this).toggleClass("close");
         return false;
     }).next().hide();
 
     showErrorSections();
+    
+    setMailServerInputReadonly();
+    setSystemFromEmailReadonly();
+    setConfigureMailServerListener();
+    setEnableSystemEmailsListener();
 });