Use btn-secondary class instead of btn-default

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: Master
• Component/s: Product Information Management
• Labels: None
• Git Pull Request: https://github.com/liferay-commerce/liferay-portal/pull/499

Make the changes in the following files:

• modules/apps/commerce/commerce-cart-content-web/src/main/resources/META-INF/resources/dynamic_include/add_to_cart_button.jsp
• modules/apps/commerce/commerce-frontend-taglib/src/main/resources/META-INF/resources/header/page.jsp
• modules/apps/commerce/commerce-product-content-search-web/src/main/resources/META-INF/resources/sort/view.jsp
• modules/apps/commerce/commerce-taglib/src/main/java/com/liferay/commerce/taglib/servlet/taglib/OrderTransitionsTag.java