[FIX] report,*: correct reports without header/footer

Since 3d04e44880 [0], the class `article`
is used instead of `page`. As reports not using `external_layout` does
still manually used `page` class as wrapper, there were not rendered
properly. Force these reports to correctly wrap their content into an
`article` div by using a dedicated template.

Closes #15118

[0] more precisely https://git.io/vM58c

addons/event/report/event_event_templates.xml

@@ -3,7 +3,7 @@
 
     <!-- template use to render a Registration Badge -->
     <template id="event_registration_report_template_badge">
-        <t t-call="report.html_container">
+        <t t-call="report.basic_layout">
             <t t-foreach="docs" t-as="o">
                 <div class="page">
                     <div class="row">
@@ -55,7 +55,7 @@
 
     <!-- template use to edit Event Badget (allow to set the HTML badge fields) -->
     <template id="event_event_report_template_badge">
-        <t t-call="report.html_container">
+        <t t-call="report.basic_layout">
             <div class="page">
                 <t t-foreach="docs" t-as="event">
                     <div class="row">

addons/hr_attendance/report/hr_employee_badge.xml

@@ -12,7 +12,7 @@
     </record>
 
     <template id="print_employee_badge">
-        <t t-call="report.html_container">
+        <t t-call="report.basic_layout">
             <div class="page">
                 <t t-foreach="docs" t-as="employee">
                     <div class="col-sm-6">

addons/point_of_sale/views/report_userlabel.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo>
 <template id="report_userlabel">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <div class="page">
             <t t-foreach="docs" t-as="user">
                 <div class="col-xs-6 mb92">

addons/product/report/product_product_templates.xml

@@ -33,7 +33,7 @@
 </template>
 
 <template id="report_productlabel">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <div class="page">
             <t t-foreach="docs" t-as="product">
                 <t t-call="product.report_simple_label">

addons/product/report/product_template_templates.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo>
 <template id="report_producttemplatelabel">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <div class="page">
             <t t-foreach="docs" t-as="template">
                 <t t-foreach="template.product_variant_ids" t-as="product">

addons/report/views/templates.xml

@@ -362,4 +362,12 @@
     </div>
 </template>
 
+<template id="basic_layout">
+    <t t-call="report.html_container">
+        <div class="article">
+            <t t-raw="0" />
+        </div>
+    </t>
+</template>
+
 </odoo>

addons/stock/report/report_location_barcode.xml

@@ -9,7 +9,7 @@
 </template>
 
 <template id="report_location_barcode">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <div t-foreach="[docs[x:x+4] for x in xrange(0, len(docs), 4)]" t-as="page_docs" class="page page_stock_location_barcodes">
             <t t-foreach="page_docs" t-as="o">
                 <t t-if="o.barcode"><t t-set="content" t-value="o.barcode"/></t>

addons/stock/report/report_lot_barcode.xml

@@ -2,7 +2,7 @@
 <odoo>
 <data>
 <template id="report_lot_barcode">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <t t-foreach="docs" t-as="o">
             <t>
                 <div class="page">

addons/stock/report/report_package_barcode.xml

@@ -2,7 +2,7 @@
 <odoo>
 <data>
 <template id="report_package_barcode">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <t t-foreach="docs" t-as="o">
             <t>
                 <div class="page">
@@ -51,7 +51,7 @@
 </template>
 
 <template id="report_package_barcode_small">
-    <t t-call="report.html_container">
+    <t t-call="report.basic_layout">
         <t t-foreach="docs" t-as="o">
             <t>
                 <div class="page">