Giveaway conversion. Preorder button fix

Giveaways.html converted to php and header and footer added.
The preorder button has been fixed for portrait view and the button has
been added as an option in the mobile drop down menu
Preliminary submit code setup

Initial submit to database code added and countries added
Postal code and intended application added

In addition, the submit code has been further modified. Getting closer
to being able to submit data from the form to our mysql database upon
submit
Giveaway form submit code finished

Giveaway page now submits to the production_heatworks database into a
table called giveaway_entries
Success message added
Product guide typo fix
Heatworks video text fix

Styles added to the video text so that it no longer breaks in portrait
mode
We are social added to xs in footer
Contact email submit fix

Code for email submit has been changed to make it easier to respond to
customers in Desk. The Reply email has been adjusted to automatically
be the email address inserted into the Contact form.
Final email change

Test email changed back to info@isitechnology.com
header.php removed
Final fixes
Form reset upon submission

The contact form now resets upon submission
Link removal from footer
Merge branch 'tb-generalfixes'
Merge branch 'tb-contactemailfix'
Merge branch 'tb-giveawayfix'