Update product table content.
Rename CSS selector. Use the exact same select as in Bootstrap.

No style chnaegs was invloved.
Button font-size bug fix.
Rearrange data in the products table.
Use route name as page specific CSS class.

This will result in something similar to `<body
class=“sylius_backend_product_index”>`. Allow developer to add page
specific rules more easily.
Add some page specific rules to products table.
Update time format.
Wrap "out of stock" / "n/a" in em tag.
Hide certain columns in smaller screens.
Update button style.
Revert "Hide certain columns in smaller screens."

This reverts commit a7ee86d4e07d4a6dd2e623f0716c8b3a93d40e2c.

Conflicts:
	src/Sylius/Bundle/WebBundle/Resources/assets/css/backend.css
Remove stock column.
Change "Del" to "Delete".
Add link title attr to fix test.
Revert "Remove stock column."

This reverts commit 7d45a1b5b59770d976ba4e2e56db2aa8225aa46f.
Remove the word "on hand" from stock column.
Change back to "Delete", but add title to the link this time.
Remove checkbox column.
The test was failing because I use capital letter. Fix test case.
Fix spacing.