[doc/administrative-dashboard][xs]: minor tweaks to text.

doc/administrative-dashboard.rst

@@ -11,9 +11,9 @@ The dashboard allows you to:
 
 The dashboard is located, relative to your site root, at ``/ckan-admin/``.
 
-.. note:: To create your first sysadmin you obviously cannot use Dashboard as
-          you will not have access! Instead You can create a sysadmin using the command
-          line ``paster`` by running the following command::
+.. note:: To create your first sysadmin you cannot use Dashboard as you will
+          not yet have access! Instead create a sysadmin using the command line
+          ``paster`` by running the following command::
           
             paster sysadmin -h
 
@@ -31,17 +31,18 @@ have 'roles' on the 'System Object'. In a standard installation, there are four
   * Having an admin role on the System objects means you are a System Administrator
     and may carry out **any** operation on any object.
 
-    .. warning:: Once a person is an system administrator, they can do
-                 **ANYTHING** on the system.
+    .. warning:: Once a person is an system administrator, they can carry out
+                 **any** operatoin on the system including **destructive**
+                 ones. Grant System Administrator access with care!
 
-* editor (Update action allowed) 
 * reader (Read action allowed)
 
   * Without read access a site user or visitor will not be able to see
     anything except the login page, even the page which allows them to
     create an account, so they're locked out forever unless they already
     have a valid account.
 
+* editor (Update action allowed) 
 * anon-editor
 
 .. note:: these roles can be applied to users on your system as well as to