Recording stats layout customizable.

Users can select the order, visibility and importance (primary or secondary) of all stats for recording layout from the Settings.
Also, users can select the number of columns per row in the recording layout: 1, 2 or 3.
Finally, show altitude/coordinate from settings have been removed (not needed anymore).
Fixes #659.
Fixes #302.
Fixes #820.

src/main/java/de/dennisguse/opentracks/content/data/DataField.java

@@ -0,0 +1,101 @@
+package de.dennisguse.opentracks.content.data;
+
+import android.content.Context;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.util.CsvConstants;
+
+public class DataField {
+    public static final String YES_VALUE = "1";
+    public static final String NOT_VALUE = "0";
+
+    private final String key;
+    private final String title;
+    private boolean isVisible;
+    private boolean isPrimary;
+    private final boolean isWide;
+
+    public DataField(String key, String title, boolean isVisible, boolean isPrimary, boolean isWide) {
+        this.key = key;
+        this.title = title;
+        this.isVisible = isVisible;
+        this.isPrimary = isPrimary;
+        this.isWide = isWide;
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public boolean isVisible() {
+        return isVisible;
+    }
+
+    public void toggleVisibility() {
+        isVisible = !isVisible;
+    }
+
+    public boolean isPrimary() {
+        return isPrimary;
+    }
+
+    public void togglePrimary() {
+        isPrimary = !isPrimary;
+    }
+
+    public boolean isWide() {
+        return isWide;
+    }
+
+    public String toCsv() {
+        String visible = this.isVisible ? YES_VALUE : NOT_VALUE;
+        String primary = this.isPrimary ? YES_VALUE : NOT_VALUE;
+        return key + CsvConstants.ITEM_SEPARATOR + visible + CsvConstants.ITEM_SEPARATOR + primary;
+    }
+
+    public static String getTitleByKey(Context context, String key) {
+        if (key.equals(context.getString(R.string.stats_custom_layout_total_time_key))) {
+            return context.getString(R.string.stats_total_time);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_moving_time_key))) {
+            return context.getString(R.string.stats_moving_time);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_distance_key))) {
+            return context.getString(R.string.stats_distance);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_speed_key))) {
+            return context.getString(R.string.stats_speed);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_pace_key))) {
+            return context.getString(R.string.stats_pace);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_average_moving_speed_key))) {
+            return context.getString(R.string.stats_average_moving_speed);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_average_speed_key))) {
+            return context.getString(R.string.stats_average_speed);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_max_speed_key))) {
+            return context.getString(R.string.stats_max_speed);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_average_moving_pace_key))) {
+            return context.getString(R.string.stats_average_moving_pace);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_average_pace_key))) {
+            return context.getString(R.string.stats_average_pace);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_fastest_pace_key))) {
+            return context.getString(R.string.stats_fastest_pace);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_altitude_key))) {
+            return context.getString(R.string.stats_altitude);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_gain_key))) {
+            return context.getString(R.string.stats_gain);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_loss_key))) {
+            return context.getString(R.string.stats_loss);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_coordinates_key))) {
+            return context.getString(R.string.stats_coordinates);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_heart_rate_key))) {
+            return context.getString(R.string.stats_sensors_heart_rate);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_cadence_key))) {
+            return context.getString(R.string.stats_sensors_cadence);
+        } else if (key.equals(context.getString(R.string.stats_custom_layout_power_key))) {
+            return context.getString(R.string.stats_sensors_power);
+        } else {
+            throw new RuntimeException("It doesn't exists a field with key: " + key);
+        }
+    }
+}

src/main/java/de/dennisguse/opentracks/content/data/Layout.java

@@ -0,0 +1,42 @@
+package de.dennisguse.opentracks.content.data;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Layout {
+    private final String profile;
+    private final List<DataField> dataFields = new ArrayList<>();
+
+    public Layout(String profile) {
+        this.profile = profile;
+    }
+
+    public void addField(String key, String title, boolean visible, boolean primary, boolean isWide) {
+        dataFields.add(new DataField(key, title, visible, primary, isWide));
+    }
+
+    public void addField(DataField dataField) {
+        dataFields.add(dataField);
+    }
+
+    public void addFields(List<DataField> dataFields) {
+        this.dataFields.addAll(dataFields);
+    }
+
+    public void removeField(DataField dataField) {
+        dataFields.remove(dataField);
+    }
+
+    public List<DataField> getFields() {
+        return new ArrayList<>(dataFields);
+    }
+
+    public void moveField(int from, int to) {
+        DataField dataFieldToMove = dataFields.remove(from);
+        dataFields.add(to, dataFieldToMove);
+    }
+
+    public String getProfile() {
+        return profile;
+    }
+}