It Builds!

app/src/main/res/menu/library.xml

@@ -50,10 +50,10 @@
                 android:title="@string/label_alpha_reverse"/>
             <item
                 android:id="@+id/action_update_asc"
-                android:title="@string/action_sort_last_updated"/>
+                android:title="@string/action_sort_last_checked"/>
             <item
                 android:id="@+id/action_update_dsc"
-                android:title="@string/action_sort_first_updated"/>
+                android:title="@string/action_sort_first_checked"/>
         </menu>
     </item>
 

app/src/main/res/menu/settings_sources.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_search"
+        android:title="@string/action_search"
+        android:icon="@drawable/ic_search_24dp"
+        app:showAsAction="collapseActionView|ifRoom"
+        app:iconTint="?attr/colorOnPrimary"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"/>
+
+    <item
+        android:id="@+id/action_sort"
+        android:title="@string/action_sort"
+        android:icon="@drawable/ic_filter_list_24dp"
+        app:iconTint="?attr/colorOnPrimary"
+        app:showAsAction="ifRoom">
+        <menu>
+            <group android:id="@+id/group"
+                android:checkableBehavior="single">
+            <item
+                android:id="@+id/action_sort_alpha"
+                android:title="@string/action_sort_alpha"/>
+            <item
+                android:id="@+id/action_sort_enabled"
+                android:title="@string/action_sort_enabled"/>
+            </group>
+        </menu>
+    </item>
+</menu> 
+

app/src/main/res/values/strings.xml

@@ -45,8 +45,10 @@
     <string name="action_sort_total">Total chapters</string>
     <string name="action_sort_last_read">Last read</string>
     <string name="action_sort_last_checked">Last checked</string>
+    <string name="action_sort_first_checked">First checked</string>
     <string name="action_sort_latest_chapter">Latest chapter</string>
     <string name="action_sort_drag_and_drop">Drag &amp; Drop</string>
+    <string name="action_sort_enabled">Enabled</string>
     <string name="action_search">Search</string>
     <string name="action_skip_manga">Don\'t migrate</string>
     <string name="action_global_search">Global search</string>
@@ -130,6 +132,7 @@
     <string name="pref_category_library">Library</string>
     <string name="pref_category_reader">Reader</string>
     <string name="pref_category_downloads">Downloads</string>
+    <string name="pref_category_all_sources">All Sources</string>
     <string name="pref_category_tracking">Tracking</string>
     <string name="pref_category_advanced">Advanced</string>
     <string name="pref_category_about">About</string>
@@ -152,7 +155,6 @@
     <string name="pref_date_format">Date format</string>
     <string name="pref_confirm_exit">Confirm exit</string>
     <string name="pref_manage_notifications">Manage notifications</string>
-    <string name="hide_notification_content">Hide notification content</string>
 
     <string name="pref_category_security">Security</string>
     <string name="lock_with_biometrics">Lock with biometrics</string>
@@ -578,6 +580,7 @@
         <item quantity="one">Chapters %1$s and 1 more</item>
         <item quantity="other">Chapters %1$s and %2$d more</item>
     </plurals>
+    <string name="notification_new_chapters_text_old">For %1$d titles</string>
     <string name="notification_cover_update_failed">Failed to update cover</string>
     <string name="notification_first_add_to_library">Please add the manga to your library before doing this</string>
     <string name="notification_not_connected_to_ac_title">Sync canceled</string>
@@ -639,6 +642,9 @@
     <string name="channel_downloader">Downloader</string>
     <string name="channel_new_chapters">Chapter updates</string>
     <string name="channel_ext_updates">Extension updates</string>
+    <string name="channel_backup_restore">Backup and restore</string>
+    <string name="channel_backup_restore_progress">Progress</string>
+    <string name="channel_backup_restore_complete">Complete</string>
     
     <!-- Migration -->
     <string name="source_migration">Source migration</string>
@@ -654,7 +660,6 @@
     <string name="use_first_source">Use first source with alternative</string>
     <string name="skip_this_step_next_time">Skip this step next time</string>
     <string name="search_parameter">Search parameter (e.g. language:english)</string>
-    <string name="include_extra_search_parameter">Include extra search parameter when searching</string>
     <string name="to_show_again_setting_library">To show this screen again, go to Settings -> Library.</string>
     <string name="latest_">Latest: %1$s</string>
     <string name="migrating_to">migrating to</string>

app/src/main/res/values/themes.xml

@@ -94,7 +94,7 @@
         <item name="actionBarTheme">@style/Theme.Toolbar.Light</item>
     </style>
 
-    <style name="Theme.EHActivity" parent="Theme.Tachiyomi">
+    <style name="Theme.EHActivity" parent="Theme.Tachiyomi.Light">
         <!-- Attributes specific for SDK 16 to SDK 20 -->
     </style>