Update english.php

Added "Submit" text to language file for buttons.
Update contact.tpl

Changed button from "Continue" to "Submit"
Update contact.php

Changed submit button language call.
Update return_form.tpl

Changed return form button from "Continue" to "Submit"
Update return.php

Changed language call for return form submission button from "Continue" to "Submit"
When adding new store, copy to new store the default layout route
Merge branch 'master' of git@github.com:opencart/opencart.git
more api work done
more order api work done
more api work done
more api work done
more api work done
more api work done, nearly finished
Fixed an issue with the dropdown menus in the main navigation. Ref: #1158
Increased the line-height on the flex slider arrows. This fixed an issue with the Flex Slider arrows not displaying correctly. Ref: #1445
Changed all labels in the alert dropdown to positions absolute. This fixed an issue in Firefox where the labels didn't line up. Ref: #1427
Merge pull request #1665 from JamesAtkinson/master

Fixed dropdowns on mobile, Flex slider arrows and alert labels in the admin area
Merge pull request #1654 from eka7a/master

When adding new store, copy to new store the default layout route
more order editor work done
Merge branch 'master' of https://github.com/opencart/opencart