i18n: translate preferences

Tuleap: #18
Change-Id: I2f4c3ca2ced9fa07edce6346beb5eba7b1c2c65f
diff --git a/ring-android/app/src/main/res/values/strings_preferences.xml b/ring-android/app/src/main/res/values/strings_preferences.xml
new file mode 100644
index 0000000..cab7c01
--- /dev/null
+++ b/ring-android/app/src/main/res/values/strings_preferences.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="pref_category_network">Network</string>
+    <string name="pref_mobileData_title">Mobile data</string>
+    <string name="pref_mobileData_summary">Allow Ring on 3G/LTE networks additionally to Wi-Fi</string>
+
+    <string name="pref_category_contacts">Contacts</string>
+    <string name="pref_systemContacts_title">Use system contacts</string>
+    <string name="pref_systemContacts_summary">Use system contacts to show caller details.</string>
+
+</resources>
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