invites wording + email format changes

templates/account/email/invite_user.txt

@@ -1,11 +1,22 @@
-{{ signup_code.inviter }} ({{signup_code.inviter.email}}) has invited you to join 
-MapStory ( http://{{ current_site.domain }} )!
+{{ signup_code.inviter }} ({{signup_code.inviter.email}}) has
+invited you to join MapStory ( http://{{ current_site.domain }} )!
 
 Just click the following link to get started:
 {{ signup_url }}
 
-To learn more about MapStory:
-http://wiki.mapstory.org/index.php?title=Main_Page
+You have been invited to join the MapStory community.  MapStory
+empowers a global community to organize its knowledge about the
+world spatially and temporally. With MapStory, people of all
+kinds turn into Storytellers who can create, share, and
+collaborate on MapStories and ultimately improve our
+understanding of global dynamics, worldwide, over the course of
+history.  Like Wikipedia, all data that you add to  MapStory is
+contributed to the global data commons.  For more details, the
+MapStory license and copyright can be read here. per the terms in
+this license:
+http://wiki.mapstory.org/index.php?title=License_and_Copyright.
 
-Please do not reply to this e-mail.  If you have questions about this invite, 
-please e-mail the person who sent it or info@mapstory.org
+
+Please do not reply to this e-mail.  If you have questions about
+this invite, please e-mail the person who sent it or
+info@mapstory.org

templates/mapstory/invites.html

@@ -6,7 +6,7 @@
 {% block main %}
 <div class="row mrg-top minsize">
     <div class="span12">
-        <h2>Invite Your MapStory Telling Friends</h2>
+        <h2>Invite your MapStorytelling Friends</h2>
     </div>
 </div>
 <div class="row mrg-top mrg-btm">