Grocycode, label printing (#1500)

* Grocycode: Productpicker, StockService

* Grocycode: Datamatrix generation

* Grocycode: Display in UI, make Images downloadable

* Grocycode: Do not show on product card

* Grocycode: Stockentry Label view

* Grocycode: Webhooks & Labelprinter Feature

* Grocycode: Manual Label printing

* Grocycode: Print Label from product form

* Quagga2: use zxing for DataMatrix recognition

* Grocycode: Default settings for label printing

* Prepare merge of master

* Grocycode: docs

* Docs: label printing webhook

* Review

- "grocy" is currently written lower-case everywhere, so let's do this also for "grocycode"
- Unified phrases / capitalization
- Minor UI adjustments (mainly context menu item ordering / ordering/spacing on product edit page)
- Documented API changes for Swagger UI (grocy.openapi.json)
- Reverted German localizations (those are managed via Transifex; would cause conflicts when manually edited - will import them later there)
- Reverted a somehow messed up localization string (productform/help text for `cumulate_min_stock_amount_of_sub_products`)
- Suppress deprecation warnings when generating Datamatrix PNG (otherwise the PNG is invalid, https://github.com/jucksearm/php-barcode/issues/3)
- Default `FEATURE_FLAG_LABELPRINTER` to disabled

Co-authored-by: Bernd Bestel <bernd@berrnd.de>

views/purchase.blade.php

@@ -12,7 +12,7 @@
 <script>
 	Grocy.QuantityUnits = {!! json_encode($quantityUnits) !!};
 	Grocy.QuantityUnitConversionsResolved = {!! json_encode($quantityUnitConversionsResolved) !!};
-	Grocy.DefaultMinAmount = '{{$DEFAULT_MIN_AMOUNT}}';
+	Grocy.DefaultMinAmount = '{{ $DEFAULT_MIN_AMOUNT }}';
 </script>
 
 <div class="row">
@@ -148,6 +148,21 @@
 			))
 			@endif
 
+			@if(GROCY_FEATURE_FLAG_LABELPRINTER)
+			<div class="form-group">
+				<label for="print_stock_label">{{ $__t('Stock entry label') }}</label>
+				<select class="form-control"
+					id="print_stock_label"
+					name="print_stock_label">
+					<option value="0">{{ $__t('No label') }}</option>
+					<option value="1">{{ $__t('Single label') }}</option>
+					<option value="2"
+						id="label-option-per-unit">{{ $__t('Label per unit') }}</option>
+				</select>
+				<div class="invalid-feedback">{{ $__t('A quantity unit is required') }}</div>
+			</div>
+			@endif
+
 			<button id="save-purchase-button"
 				class="btn btn-success d-block">{{ $__t('OK') }}</button>