CHANGE-293 #75 editing product, Product Qty Units 

While editing product, Product Qty Units displays as 1 if it is 0 on the database #75
Fix Unit, Min and fix copy from and copy to products
<a href='#crh-start'></a><a href='#crh-data-%7B%22processed%22%3A%20%5B%22https%3A//github.com/zencart/zc-v1-series/pull/77%23issuecomment-48560000%22%2C%20%22https%3A//github.com/zencart/zc-v1-series/pull/77%23discussion_r14787659%22%2C%20%22https%3A//github.com/zencart/zc-v1-series/pull/77%23discussion_r14787753%22%5D%2C%20%22comments%22%3A%20%7B%22General%20Comment%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/zencart/zc-v1-series/pull/77%23issuecomment-48560000%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22%3A%2B1%3A%20%22%2C%20%22created_at%22%3A%20%222014-07-10T02%3A52%3A56Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/227354%3F%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/zcwilt%22%7D%7D%5D%2C%20%22title%22%3A%20%22General%20Comment%22%7D%2C%20%22Pull%201d1868b0145ff9599b911dd33d75c1e70b82a354%20admin/includes/modules/product_music/copy_to_confirm.php%2025%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/zencart/zc-v1-series/pull/77%23discussion_r14787753%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22See%20above%20comment.%5Cr%5Cn%60%60%60php%5Cr%5Cnzen_db_input%28%24product-%3Efields%5B%27products_quantity_order_min%27%5D%20%3F%3A%201%29%3B%5Cr%5Cnzen_db_input%28%24product-%3Efields%5B%27products_quantity_order_units%27%5D%20%3F%3A%201%29%3B%5Cr%5Cn%60%60%60%22%2C%20%22created_at%22%3A%20%222014-07-10T19%3A35%3A27Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/1590605%3F%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/texdc%22%7D%7D%5D%2C%20%22title%22%3A%20%22File%3A%20admin/includes/modules/product_music/copy_to_confirm.php%3AL83-91%22%7D%2C%20%22Pull%201d1868b0145ff9599b911dd33d75c1e70b82a354%20admin/includes/modules/copy_to_confirm.php%2025%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/zencart/zc-v1-series/pull/77%23discussion_r14787659%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22There%27s%20a%20shorter%20syntax%20for%20these%20lines%3A%5Cr%5Cn%60%60%60php%5Cr%5Cnzen_db_input%28%24product-%3Efields%5B%27products_quantity_order_min%27%5D%20%3F%3A%201%29%3B%5Cr%5Cnzen_db_input%28%24product-%3Efields%5B%27products_quantity_order_units%27%5D%20%3F%3A%201%29%3B%5Cr%5Cn%60%60%60%22%2C%20%22created_at%22%3A%20%222014-07-10T19%3A33%3A32Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/1590605%3F%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/texdc%22%7D%7D%5D%2C%20%22title%22%3A%20%22File%3A%20admin/includes/modules/copy_to_confirm.php%3AL83-91%22%7D%7D%7D'></a>
<a href='https://www.codereviewhub.com/'><img src='http://www.codereviewhub.com/site/github-bar.png' height=40></a>
- [ ] <a href='#crh-comment-Pull 1d1868b0145ff9599b911dd33d75c1e70b82a354 admin/includes/modules/copy_to_confirm.php 25'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/zencart/zc-v1-series/pull/77#discussion_r14787659'>File: admin/includes/modules/copy_to_confirm.php:L83-91</a></b>
- <a href='https://github.com/texdc'><img border=0 src='https://avatars.githubusercontent.com/u/1590605?size=16' height=16 width=16'></a> There's a shorter syntax for these lines:
```php
zen_db_input($product->fields['products_quantity_order_min'] ?: 1);
zen_db_input($product->fields['products_quantity_order_units'] ?: 1);
```
- [ ] <a href='#crh-comment-Pull 1d1868b0145ff9599b911dd33d75c1e70b82a354 admin/includes/modules/product_music/copy_to_confirm.php 25'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/zencart/zc-v1-series/pull/77#discussion_r14787753'>File: admin/includes/modules/product_music/copy_to_confirm.php:L83-91</a></b>
- <a href='https://github.com/texdc'><img border=0 src='https://avatars.githubusercontent.com/u/1590605?size=16' height=16 width=16'></a> See above comment.
```php
zen_db_input($product->fields['products_quantity_order_min'] ?: 1);
zen_db_input($product->fields['products_quantity_order_units'] ?: 1);
```


<a href='https://www.codereviewhub.com/zencart/zc-v1-series/pull/77?mark_as_completed=1'><img src='http://www.codereviewhub.com/site/github-mark-as-completed.png' height=26></a>&nbsp;<a href='https://www.codereviewhub.com/zencart/zc-v1-series/pull/77?approve=1'><img src='http://www.codereviewhub.com/site/github-approve.png' height=26></a>&nbsp;<a href='https://github.com/zencart/zc-v1-series/pull/77'><img src='http://www.codereviewhub.com/site/github-refresh.png' height=26></a>
<a href='#crh-end'></a>
Again,
```php
zen_db_prepare_input($_POST['products_quantity_order_min'] ?: 1);
zen_db_prepare_input($_POST['products_quantity_order_units'] ?: 1);
```