Update and dedup translations

Author: AB-xdev

vaadin-breadcrumbs-demo/src/main/resources/vaadin-i18n/translations_de.properties

@@ -1,16 +1,8 @@
-breadcrumb_home=Startseite
-breadcrumb_cars=Autos
-breadcrumb_electric=Strom
-breadcrumb_hybrid=Hybrid
-breadcrumb_gasoline=Benzin
-sidenav_cars=Autos
-sidenav_electric=Strom
-sidenav_hybrid=Hybrid
-sidenav_gasoline=Benzin 
-sidenav_home=Startseite
-grid_fuel=Treibstoff
-grid_type=Modell
-grid_hp=PS
-grid_electric=Strom
-grid_hybrid=Hybrid
-grid_gasoline=Benzin
+home=Start
+cars=Autos
+electric=Elektrisch
+hybrid=Hybrid
+gasoline=Benzin
+fuel=Treibstoff
+model=Modell
+hp=PS

vaadin-breadcrumbs-demo/src/main/resources/vaadin-i18n/translations_en.properties

@@ -1,16 +1,8 @@
-breadcrumb_home=Home
-breadcrumb_cars=Cars
-breadcrumb_electric=Electric
-breadcrumb_hybrid=Hybrid
-breadcrumb_gasoline=Gasoline
-sidenav_cars=Cars
-sidenav_electric=Electric
-sidenav_hybrid=Hybrid
-sidenav_gasoline=Gasoline
-sidenav_home=Home
-grid_fuel=Fuel
-grid_type=Type
-grid_hp=HP
-grid_electric=Electric
-grid_hybrid=Hybrid
-grid_gasoline=Gasoline
+home=Home
+cars=Cars
+electric=Electric
+hybrid=Hybrid
+gasoline=Gasoline
+fuel=Fuel
+model=Model
+hp=HP