descriptive text on registration page

journalmarks/templates/login.html

@@ -49,7 +49,7 @@ else document.attachEvent('onreadystatechange', function(){
 
     <fieldset class="pure-group">
         <input class="pure-input-1-2" id="username" type="text" placeholder="Username">
-        <input class="pure-input-1-2" id="password" type="password" placeholder="Password">
+        <input class="pure-input-1-2" id="password" type="password" placeholder="Passphrase">
     </fieldset>
 
     <div clas="pure-controls">

journalmarks/templates/register.html

@@ -48,9 +48,13 @@ else document.attachEvent('onreadystatechange', function(){
 {% block body %}
 <h1>Registration</h1>
 
+<p>
+Please fill in the following fields to register a new account. You should choose a strong passphrase, as it is used to encrypt your Journalmarks. Unfortunatelly, there's no possibility yet to change your passphrase later on. However, you won't have to enter it often, sessions are remembered for some time.
+</p>
+
 <div id='registration-form' class="pure-form pure-form-aligned">
     <p id="err-passwords-dont-match" class="errmsg">
-    Passwords do not match.
+    Passphrases do not match.
     </p>
 
     <p id="err-fill-all-fields" class="errmsg">
@@ -69,13 +73,13 @@ else document.attachEvent('onreadystatechange', function(){
         </div>
 
         <div class="pure-control-group">
-            <label for="password">Password</label>
+            <label for="password">Passphrase</label>
-            <input id="password" type="password" placeholder="Password">
+            <input id="password" type="password" placeholder="Passphrase">
         </div>
 
         <div class="pure-control-group">
-            <label for="password2">Password (again)</label>
+            <label for="password2">Passphrase (again)</label>
-            <input id="password2" type="password" placeholder="Password (again)">
+            <input id="password2" type="password" placeholder="Passphrase (again)">
         </div>
 
         <div class="pure-control-group">