Prevent users reaching `/administration` url with 404 error
Force the redirect to the admin panel dashboard
Add SKU to Variant Form

Sku is already available in model, but not editable via admin.
This commit adds sku field to form and templates, and enforces unique validation.
Remove duplicated keys, extract translations
Extract DE translations and fix duplicated keys
Merge pull request #395 from stloyd/bugfix/admin-panel-route

Prevent users reaching `/administration` url with 404 error
Merge pull request #393 from Richtermeister/add-sku

Add SKU to Variant Form
Use real data in statistics table at dashboard
Merge pull request #397 from stloyd/bugfix/admin-dashboard

Use real data in statistics table at dashboard
Quick fix for gallery onclick event attachment on non existent element
Use the user provider instead of manager
Fix inventory handling during checkout
Add tax categories checking scenarios
Implement taxes included in price calculation
Simplify the taxation processor as per @stloyd comment
Fix specs for order inventory listener
Merge pull request #405 from Sylius/tax-categories-features

Tax categories scenarios + tax included in price
Merge pull request #404 from Sylius/fix-inventory-update

Fix inventory handling during checkout
Update KnpMenu to version `2.0`, rework menus a bit
Fix dependencies diffs between main repo and WebBundle
Merge pull request #416 from stloyd/feature/menu

Update KnpMenu to version `2.0`, rework menus a bit
Merge pull request #403 from defrag/fix/gallery-js-fatal-error-fix

Quick fix for gallery onclick event attachment on non existent element