Added Turkish Language Support on Android Viewer

Change-Id: I0b2f1ca5386510e3a8217cf3bb3e08a940f438f7
Signed-off-by: Mert Tumer <merttumer@outlook.com>
Reviewed-on: https://gerrit.libreoffice.org/61788
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

android/source/res/values/arrays.xml

@@ -14,6 +14,7 @@
     </string-array>
     <string-array name="SupportedLanguagesValues">
         <item >en</item>
+        <item >tr</item>
     </string-array>
     <string-array name="SortModeStringValues">
         <item >0</item>
@@ -41,6 +42,7 @@
     </string-array>
     <string-array name="SupportedLanguages">
         <item>English</item>
+        <item>Turkçe</item>
     </string-array>
     <string-array name="SortModeNames">
         <item >@string/sort_az</item>

android/source/res/values/strings.xml

@@ -225,4 +225,6 @@
     <string name="pref_sort_title">File Order</string>
     <string name="pref_filter_title">Default File Filter</string>
     <string name="pref_filter_summary">Set which file filter should be used by default.</string>
+    <string name="display_language">Display Language</string>
+    <string name="display_language_summary">Set the default display language</string>
 </resources>

android/source/res/xml/libreoffice_preferences.xml

@@ -24,8 +24,8 @@
             android:summary="@string/pref_viewmode_summary" />
 
         <ListPreference
-            android:title="Display Language"
-            android:summary="Set the default display language"
+            android:title="@string/display_language"
+            android:summary="@string/display_language_summary"
             android:entries="@array/SupportedLanguages"
             android:entryValues="@array/SupportedLanguagesValues"
             android:key="DISPLAY_LANGUAGE"