Added some small styling tweaks to the modals, and adjusted some copy.

public/app/features/org/partials/invite.html

@@ -5,7 +5,7 @@
 	</a>
 
 	<h3>
-		Add or Invite Users
+		Invite New Users
 	</h3>
 
 	<div class="modal-tagline">

public/app/partials/signup_invited.html

@@ -11,12 +11,11 @@
 
     <div class="invite-box">
 			<h3>
-				Hi, {{greeting}}, Welcome to Grafana party.
+				Hello {{greeting}}.
 			</h3>
 
-			<div class="modal-tagline">
-				Beer and wine in the fridge, food out back - <br>
-				but first introduce yourself.
+			<div class="long-tag modal-tagline">
+				<span class="body-copy-emphasis">{{.InvitedBy}}</span> has invited you to join the <span class="highlight-word">{{contextSrv.user.orgName}}</span> organization in Grafana.</br>Please complete the following to accept your invitation and continue:
 			</div>
 
       <form name="inviteForm" class="login-form">

public/css/less/grafana.less

@@ -277,6 +277,11 @@
   }
 }
 
+.long-tag {
+  width: 90%;
+  margin: 0 auto;
+}
+
 .confirm-modal {
   max-width: 500px;
 
@@ -365,6 +370,10 @@
   color: @orange;
 }
 
+.body-copy-emphasis {
+    color: @headingsColor;
+}
+
 .signup-page-container {
   position: fixed;
   top: 0;