security bug fixes

Signed-off-by: Smita Kumari <kumarismita62@gmail.com>

Fix coding style

Signed-off-by: Smita Kumari <kumarismita62@gmail.com>

use existing escapeHtml function

Signed-off-by: Smita Kumari <kumarismita62@gmail.com>
Merge pull request #1220 from smita786/gsoc_central_columns_list

security bug fixes
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Merge remote-tracking branch 'origin/master'
Since PHP 5.3.0, it's not longer required to call srand() before
mcrypt_create_iv().

Signed-off-by: Marc Delisle <marc@infomarc.info>