- access most globals by their $_XYZ['varname'] name

- fix some code errors and typos (missing $ in front of variable names
and so on)
- fixed a lot of warnings that would have been thrown when error_reporting
is set to show notices (if(isset($variable))) instead of if($variable) for
example)

include/form_edit.php

@@ -11,7 +11,7 @@
 
       <tr>
 	<td> &nbsp; User Name </td>
-	<td> <b> <?=$ext_username?> </b> </td>
+	<td> <b> <?=$ext_username;?> </b> </td>
       </tr>
       <tr>
 	<td> &nbsp; Password </td>
@@ -23,11 +23,11 @@
       </tr>
       <tr>
 	<td> &nbsp; Real Name </td>
-	<td> <input type="text" name="ext_realname" value="<?=$ext_realname?>"> </td>
+	<td> <input type="text" name="ext_realname" value="<?=$ext_realname;?>"> </td>
       </tr>
       <tr>
 	<td> &nbsp; Email Address </td>
-	<td> <input type="text" name="ext_email" value="<?=$ext_email?>"> </td>
+	<td> <input type="text" name="ext_email" value="<?=$ext_email;?>"> </td>
       </tr>
       <tr>
 	<td colspan=2>&nbsp;</td>