Trebuchet: allow disabling workspace edit

<?xml version="1.0" encoding="utf-8"?>

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<vector xmlns:android="http://schemas.android.com/apk/res/android"

    android:width="@dimen/settings_icon_size"

    android:height="@dimen/settings_icon_size"

    android:viewportHeight="24.0"

    android:viewportWidth="24.0">

    <path

        android:fillColor="@color/settings_icons"

        android:pathData="M3,17.25V21h3.75L17.81,9.94l-3.75,-3.75L3,17.25zM20.71,7.04c0.39,-0.39 0.39,-1.02 0,-1.41l-2.34,-2.34c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83 3.75,3.75 1.83,-1.83z" />

</vector>

    <string name="settings_icon_badging_desc_on">A bubble will be displayed above the icon when there\'s a notification</string>

    <string name="settings_icon_badging_desc_off">No bubble will be displayed above the icon when there\'s a notification</string>

    <string name="settings_feed">Enable feed integration</string>

    <string name="settings_edit_allow_title">Allow edit</string>

    <string name="settings_edit_allow_summary_on">Icons and widgets can be added, removed and moved on the homescreen</string>

    <string name="settings_edit_allow_summary_off">Icons and widgets can\'t be added, removed and moved on the homescreen</string>

    <string name="settings_edit_widgets_error">It\'s not possible to add widgets to the home screen</string>

</resources>

-->

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">

    <SwitchPreference

        android:defaultValue="true"

        android:icon="@drawable/ic_settings_edit"

        android:key="pref_workspace_edit"

        android:persistent="true"

        android:title="@string/settings_edit_allow_title"

        android:summaryOn="@string/settings_edit_allow_summary_on"

        android:summaryOff="@string/settings_edit_allow_summary_off" />

    <PreferenceCategory

        android:key="category_home"

        android:title="@string/settings_category_home">

            mLauncherCallbacks.onResume();

        }

        mWidgetsButton.setVisibility(Utilities.isWorkspaceEditAllowed(getApplicationContext()) ?

                View.VISIBLE : View.GONE);

    }

    @Override

import android.content.Intent;

import android.content.SharedPreferences;

import android.content.pm.ApplicationInfo;

import android.content.pm.PackageInfo;

import android.content.pm.PackageManager;

import android.os.Bundle;

import android.preference.ListPreference;

    private static final String KEY_SHOW_DRAWER_LABELS = "pref_drawer_show_labels";

    static final String KEY_FEED_INTEGRATION = "pref_feed_integration";

    public static final String KEY_WORKSPACE_EDIT = "pref_workspace_edit";

    static final String EXTRA_SCHEDULE_RESTART = "extraScheduleRestart";