More checks on user input


git-svn-id: http://svn.montala.net/svn/resourcespace@4450 c08608d7-6e46-0410-86ca-f2a6f1370df5
Added lots of htmlspecialchars() and urlencode() to prevent XSS / HTML injection
Removed 'remember username' function as this will not work now that the session cookie does not contain the username.


git-svn-id: http://svn.montala.net/svn/resourcespace@4451 c08608d7-6e46-0410-86ca-f2a6f1370df5
fix for plupload issue after r4445


git-svn-id: http://svn.montala.net/svn/resourcespace@4452 c08608d7-6e46-0410-86ca-f2a6f1370df5