Simply gallery data files, only keep maximum width per photo, keep 640w compatibility

_data/gallery/2015-spain-tarragona.yml

@@ -1,4 +1,4 @@
-title: "Spain: Tarragona"
+title: Spain - Tarragona
 date: 2015-06-27
 map:
   latitude: 41.116458333333
@@ -14,11 +14,7 @@ photos:
       latitude: 41.117123333333
       longitude: 1.25617
     model: One A0001
-    sizes:
-      1920x1080: { height: 1080, width: 1920 }
-      640w: { height: 360, width: 640 }
-      200x200: { height: 200, width: 200 }
-      96x96: { height: 96, width: 96 }
+    width: 1920
     make: OnePlus
   1422b9b:
     aperture: f/2.0
@@ -29,11 +25,7 @@ photos:
       latitude: 41.113583333333
       longitude: 1.25641
     model: One A0001
-    sizes:
-      1920x1080: { height: 1080, width: 1920 }
-      640w: { height: 360, width: 640 }
-      200x200: { height: 200, width: 200 }
-      96x96: { height: 96, width: 96 }
+    width: 1920
     make: OnePlus
   5a4c1c4:
     aperture: f/2.0
@@ -59,9 +51,5 @@ photos:
       latitude: 41.11692
       longitude: 1.2556716666667
     model: One A0001
-    sizes:
-      1920x1080: { height: 1080, width: 1920 }
-      640w: { height: 360, width: 640 }
-      200x200: { height: 200, width: 200 }
-      96x96: { height: 96, width: 96 }
+    width: 1920
     make: OnePlus