Ensure variable is set.

Thanks @ArtcoInc @John W
BUGFIX:  breadcrumb links

Fixes breadcrumb links in smaller viewports.  Thanks to @altoid and
@ken44 for testing.
BUGFIX:  Language for specials/new products

Missing language define as these files now use the product_listing
module.
Image Layout on Product Page

For multiple images.
BUGFIX
Update README.md
BUGFIX: product_info.php form

Thanks @wHiTeHaT
BUGFIX: bm_contact.php

Remove unnecessary line of code
Duplicate attribute class fixed

Removed class class="form-control" causing duplicate class and so no validation.

tep_draw_input_field() function by default adds class="form-control" so no need to put it again
Bugfix, no need a tag in li

Removed a tag between li causing adding extra empty a tag.

tep_create_sort_heading by default adds a tags
Removed class="form-control"

class="form-control" is not needed here because tep_draw_input_field adds is by default
Removed <hr> inside <h5> tag

Removed <hr> inside <h5> tag causing validation error.

Note: it changes the style (look of the new products list)
Validation fix, ul tag cannot be child of span tag
Merge pull request #17 from gadlol/patch-2

Duplicate attribute class fixed
Merge pull request #19 from gadlol/patch-4

Removed class="form-control"
Merge pull request #21 from gadlol/patch-6

Validation fix, ul tag cannot be child of span tag
Introduce Clickable Table Rows

Would be used in checkout to allow whole row click to select radio
button.
Reintroduce Tables to Checkout Shipping
Validation Fix.

Thanks @gadlol
Merge pull request #20 from gadlol/patch-5

Removed <hr> inside <h5> tag