merge automatic group order invoice generation

see https://github.com/foodcoops/foodsoft/pull/907 for reference
and original work by viehlieb

Co-authored-by: viehlieb <pf@pragma-shift.net>

fix PDF Pdf

make explicit deposit in invoices work

add ordergroupname to invoice file name

mark bold sum for vat exempt foodcoops

download multiple group order invoice as zip

app/views/group_order_invoices/_links.html.haml

@@ -0,0 +1,29 @@
+.row
+  .column.small-12
+    - show_generate_with_date = true
+    - order.group_orders.each do |go|
+      - if go.group_order_invoice.present?
+        - show_generate_with_date = false
+    - if show_generate_with_date
+      = form_for :group_order_invoice, url: url_for('group_order_invoice#create_multiple'), remote: true do |f| 
+        = f.label :invoice_date, I18n.t('activerecord.attributes.group_order_invoice.links.invoice_date')
+        = f.date_field :invoice_date, {value: Date.today, max: Date.today, required: true}
+        = f.hidden_field :order_id, value: order.id
+        = f.submit  I18n.t('activerecord.attributes.group_order_invoice.links.generate_with_date'), class: 'btn btn small'
+
+- order.group_orders.includes([:group_order_invoice, :ordergroup]).each do |go|
+  .row
+    .column.small-3
+      = label_tag go.ordergroup.name
+    - if go.group_order_invoice
+      .column.small-3
+        = link_to I18n.t('activerecord.attributes.group_order_invoice.links.download'), group_order_invoice_path(go.group_order_invoice, :format => 'pdf'), class: 'btn btn-small'
+      .column.small-3
+        = link_to  I18n.t('activerecord.attributes.group_order_invoice.links.delete'), go.group_order_invoice, method: :delete, class: 'btn btn-danger btn-small', remote: true
+    - else
+      = button_to  I18n.t('activerecord.attributes.group_order_invoice.links.generate'), group_order_invoices_path(:method => :post, group_order: go) ,class: 'btn btn-small', params: {id: order.id}, remote: true
+- if order.group_orders.map(&:group_order_invoice).compact.present?
+  %br/
+  .row
+    .column.small-3
+      = link_to I18n.t('activerecord.attributes.group_order_invoice.links.download_all_zip'), download_all_group_order_invoices_path(order), class: 'btn btn-small'

app/views/group_order_invoices/create.js.erb

@@ -0,0 +1 @@
+$("#generate-invoice<%= params[:id] %>").html("<%= escape_javascript(render partial: 'links', locals: {order: @order}) %>");

app/views/group_order_invoices/create_multiple.js.erb

@@ -0,0 +1 @@
+$("#generate-invoice<%= @order.id %>").html("<%= escape_javascript(render partial: 'links', locals: {order: @order}) %>");

app/views/group_order_invoices/destroy.js.erb

@@ -0,0 +1 @@
+$("#generate-invoice<%= @order.id %>").html("<%= escape_javascript(render partial: 'links', locals: {order: @order}) %>");