add location-map and location-picker; improve page create and page listing

locales/de.json

@@ -103,6 +103,7 @@
     "notFound": "Diese Anzeige wurde nicht gefunden.",
     "backHome": "Zur Startseite",
     "description": "Beschreibung",
+    "location": "Standort",
     "seller": "Anbieter",
     "anonymousSeller": "Anonymer Anbieter",
     "memberSince": "Mitglied seit",

locales/en.json

@@ -103,6 +103,7 @@
     "notFound": "This listing was not found.",
     "backHome": "Back to Home",
     "description": "Description",
+    "location": "Location",
     "seller": "Seller",
     "anonymousSeller": "Anonymous Seller",
     "memberSince": "Member since",

locales/fr.json

@@ -103,6 +103,7 @@
     "notFound": "Cette annonce n'a pas été trouvée.",
     "backHome": "Retour à l'accueil",
     "description": "Description",
+    "location": "Emplacement",
     "seller": "Vendeur",
     "anonymousSeller": "Vendeur anonyme",
     "memberSince": "Membre depuis",