AndroidTV: Add export account

Adds the ability to export and generate a pin for active account. 

Change-Id: I77a9de63ae48de7988d78a836c0b31e1b1a17c91
diff --git a/ring-android/app/src/main/res/values/strings_account.xml b/ring-android/app/src/main/res/values/strings_account.xml
index a632d57..ea98331 100644
--- a/ring-android/app/src/main/res/values/strings_account.xml
+++ b/ring-android/app/src/main/res/values/strings_account.xml
@@ -188,6 +188,8 @@
     <string name="account_start_export_button">Generate Pin</string>
     <string name="account_end_export_button">close</string>
     <string name="account_end_export_infos">Your Pin is:\n\n%%\n\nTo complete the process, you need to open Ring on the new device. Create a new account with \"Link this device to an account\". Your pin is valid for 10 minutes.</string>
+    <string name="account_link_export_info_light">To use this account on other devices, you must first expose it on Ring. This will generate a PIN code that you must enter on the new device to set up the account. The PIN is valid for 10 minutes.</string>
+    <string name="account_export_title">Add devices</string>
 
     <!-- Name registration -->
     <string name="error_username_empty">Enter a username</string>