You can add content pages to the menu. Go to design -> menu section.
You can create sub menu with your pages as well.

In addition, you can create HTML block and add link to your pages with simple HTML

Light cross-site scripting vulnerability has been detected in AbanteCart.
Detected vulnerability does not cause any harm to AbanteCart or content.
To fix the problem, please read below.

Effected versions: Up to 1.1.3

About Risk:  This is a low risk cross-site scripting vulnerability. Not potential harm to code, database or server structure.

About the fix:
Fix is only 1 file that can be replaces or change manually
Option 1 (version 1.1.3):
Locate file: /core/engine/html.php  and replace with attached file

Option 2 (prior to version 1.1.3)
Locate and open file: /core/engine/html.php    
Locate  below code (about line # 114)

public function removeQueryVar($url, $vars) {
list($url_part, $q_part) = explode('?', $url);
parse_str($q_part, $q_vars);
if (!is_array($vars)) {
$vars = array( $vars );
}
foreach ($vars as $v)
unset($q_vars[ $v ]);

$new_qs = urldecode(http_build_query($q_vars));
return $url_part . '?' . $new_qs;
}

Replace with below code:

public function removeQueryVar($url, $vars) {
list($url_part, $q_part) = explode('?', $url);
parse_str($q_part, $q_vars);
if (!is_array($vars)) {
$vars = array( $vars );
}
foreach ($vars as $v)
unset($q_vars[ $v ]);

foreach ($q_vars as $key => $value)
$q_vars[$key] = $this->request->clean($value);

$new_qs = urldecode(http_build_query($q_vars));
return $url_part . '?' . $new_qs;
}
This issue is toughly addressed and eliminated in coming version of AbanteCart

Yes.

1. You can install it from admin -> extensions -> extension store

2. Download here:  http://www.abantecart.com/abantecart-extension-categories/79-payment-methods/101-eway-payment

Or simply paste below URL into install extension (upload) section

http://www.abantecart.com/attachments/article/101/ac_eway_v1.0.tar.gz

We can create Indonesian language extension based on Google auto translation and send to you.

You can validate and correct translation and set locale setting 

Once it is tested we will add to the list of extensions

If you can do this, let us know.

This template has 2 additional extensions that are listed on the bottom. See image attached.

They need to be enabled.
There is a fix for this that we work on that will be available soon, and in v 1.1.4

Would be interesting to know what in PHP does not let you through. Anyway we can debug on your server?

Hello from New Jersey

To change header colors on the blocks, you need to replace 3 images. See images attached
You can copy them to directory /storefront/view/default/image/

If you need to edit CSS it is in here:
/storefront/view/default/stylesheet/boxes.css

To add background image, you can edit:
/storefront/view/default/stylesheet/stylesheet.css
Look for:
body {
    background: none repeat scroll 0 0 #FFFFFF;
    color: #000000;
    font: 11px Tahoma,Arial,Helvetica;
    margin: 0;
    padding: 0;
}