phone placeholder from country being edited

Prefer to pull in phone placeholder text based on the country currently
being edited.  Fallback to using placeholder text based on user’s
locale settings.

rename phone placeholders to phone formats

add Germany example phone number

See [German Wikipedia article
E.123](https://de.wikipedia.org/wiki/E.123)

check for null in focus

check that input.node() is not null in i.focus()

data/data_dev.js

@@ -18,7 +18,8 @@ iD.data = {
             path + 'data/locales.json',
             path + 'dist/locales/en.json',
             path + 'data/name-suggestions.json',
-            path + 'data/address-formats.json'
+            path + 'data/address-formats.json',
+            path + 'data/phone-formats.json'
             ], d3.json, function (err, data) {
 
             iD.data = {
@@ -37,7 +38,8 @@ iD.data = {
                 locales: data[10],
                 en: data[11],
                 suggestions: data[12],
-                addressFormats: data[13]
+                addressFormats: data[13],
+                phoneFormats: data[14]
             };
 
             callback();