Add left-hand-driving dataset

(For future use by turn lane editor)

build.js

@@ -296,7 +296,8 @@ fs.writeFileSync('data/data.js', 'iD.data = ' + JSON.stringify({
     en: read('dist/locales/en.json'),
     suggestions: r('name-suggestions.json'),
     addressFormats: r('address-formats.json'),
-    phoneFormats: r('phone-formats.json')
+    phoneFormats: r('phone-formats.json'),
+    driveLeft: r('drive-left.json')
 }) + ';');
 
 fs.writeFileSync('dist/presets.js', 'iD.data.presets = ' + JSON.stringify({

data/data_dev.js

@@ -19,7 +19,8 @@ iD.data = {
             path + 'dist/locales/en.json',
             path + 'data/name-suggestions.json',
             path + 'data/address-formats.json',
-            path + 'data/phone-formats.json'
+            path + 'data/phone-formats.json',
+            path + 'data/drive-left.json'
             ], d3.json, function (err, data) {
 
             iD.data = {
@@ -39,7 +40,8 @@ iD.data = {
                 en: data[11],
                 suggestions: data[12],
                 addressFormats: data[13],
-                phoneFormats: data[14]
+                phoneFormats: data[14],
+                driveLeft: data[15]
             };
 
             callback();