Add support to choose the ISO 8601 date format as the default track name.

Note using the "yyyy-MM-dd HH:mm" format so it is readable
for users. However, the colon, ":", is not a valid
FAT32 filename character. So when saving to the SD card,
the filename becomes "yyyy-MM-dd HH_mm".

MyTracks/res/values/arrays_do_not_translate.xml

@@ -200,6 +200,18 @@ limitations under the License.
     <item>@string/sensor_type_value_zephyr</item>
   </string-array>
 
+  <string-array name="settings_recording_track_name_options">
+    <item>@string/settings_recording_track_name_date_local_option</item>
+    <item>@string/settings_recording_track_name_date_iso_8601_option</item>
+    <item>@string/settings_recording_track_name_number_option</item>
+  </string-array>
+
+  <string-array name="settings_recording_track_name_values">
+    <item>@string/settings_recording_track_name_date_local_value</item>
+    <item>@string/settings_recording_track_name_date_iso_8601_value</item>
+    <item>@string/settings_recording_track_name_number_value</item>
+  </string-array>
+
   <string-array name="waypoint_types">
     <item>@string/waypoint_type_atm</item>
     <item>@string/waypoint_type_bank</item>

MyTracks/res/values/do_not_translate.xml

@@ -49,6 +49,9 @@ limitations under the License.
   <string name="sensor_type_value_polar">POLAR</string>
   <string name="sensor_type_value_srm_ant_bridge">SRM_ANT_BRIDGE</string>
   <string name="sensor_type_value_zephyr">ZEPHYR</string>
+  <string name="settings_recording_track_name_date_iso_8601_value">DATE_ISO_8601</string>
+  <string name="settings_recording_track_name_date_local_value">DATE_LOCAL</string>
+  <string name="settings_recording_track_name_number_value">NUMBER</string>
   <string name="track_action_end">com.google.android.apps.mytracks.END_CURRENT_TRACK</string>
   <string name="track_action_save">android.intent.action.SAVE</string>
   <string name="track_action_start">com.google.android.apps.mytracks.START_NEW_TRACK</string>

MyTracks/res/values/keys.xml

@@ -36,9 +36,9 @@ limitations under the License.
   <string name="send_to_fusion_tables_key">sendToFusionTables</string>
   <string name="send_to_maps_key">sendToMaps</string>
   <string name="sensor_type_key">sensorType</string>
+  <string name="settings_recording_track_name_key">settingsRecordingTrackName</string>
   <string name="share_url_only_key">shareUrlOnly</string>
   <string name="split_frequency_key">splitFrequency</string>
-  <string name="timestamp_track_name_key">timestampTrackName</string>
   <string name="track_color_mode_dynamic_speed_variation_key">trackColorModeDynamicVariation
           </string>  
   <string name="track_color_mode_fixed_speed_medium_display_key">trackColorModeFixedMediumDisplay

MyTracks/res/values/strings.xml

@@ -1677,28 +1677,6 @@ limitations under the License.
       Screenshot: settings_recording_top.png">
     Time/distance after which a new marker will be inserted.
   </string>
-  <string name="settings_recording_name"
-    translation_description="In the 'Recording' settings, the checkbox on whether the track should
-      be named based on the track's start time or based on a number.
-
-      Character limit: ~23 (1 line)
-      Screenshot: settings_recording_bottom.png">
-    Use timestamp
-  </string>
-  <string name="settings_recording_name_summary_off"
-    translation_description="In the 'Recording' settings, the summary for the 'Use timestamp'
-      checkbox when it is unchecked explaining using a number as the default track name.
-
-      Screenshot: settings_recording_bottom_unchecked.png">
-    Use a number as the default track name.
-  </string>
-  <string name="settings_recording_name_summary_on"
-    translation_description="In the 'Recording' settings, the summary for the 'Use timestamp'
-      checkbox when it is checked explaining using the track's start time as the default track name.
-
-      Screenshot: settings_recording_bottom.png">
-    Use the track\'s start time as the default track name.
-  </string>
   <string name="settings_recording_track_distance"
     translation_description="In the 'Recording' settings, the dropdown option to configure the
       distance between two tracks.
@@ -1716,6 +1694,39 @@ limitations under the License.
     Maximum distance between two recordings of your position. If two positions are further than
     this, the track will be split.
   </string>
+  <string name="settings_recording_track_name"
+    translation_description="In the 'Recording' settings, the title for the dropdown list to choose
+      the default track name.
+      
+      Character limit: ~23 (1 line)">
+    Track name
+  </string>
+  <string name="settings_recording_track_name_date_iso_8601_option"
+    translation_description="In the 'Recording' settings, the option in the 'Track name' dropdown 
+      list to use the track start time in ISO-8601 date format as the track name.
+      
+      Character limit: ~21 (1 line)">
+    Date (ISO 8601)
+  </string>
+  <string name="settings_recording_track_name_date_local_option"
+    translation_description="In the 'Recording' settings, the option in the 'Track name' dropdown
+      list to use the track start time in local date format as the track name.
+      
+      Character limit: ~21 (1 line)">
+    Date (local)
+  </string>
+  <string name="settings_recording_track_name_number_option"
+    translation_description="In the 'Recording' settings, the option in the 'Track name' dropdown
+      list to use a number as the track name.
+      
+      Character limit: ~21 (1 line)">
+    Number
+  </string>
+  <string name="settings_recording_track_name_summary"
+    translation_description="In the 'Recording' settings, the summary for the 'Track name' dropdown
+      list explaining that it chooses the default track name format.">
+    Default track name
+  </string>
   <string name="settings_recording_voice"
     translation_description="In the 'Recording' settings, the dropdown option to configure the voice
       announcement frequency.