Merge light and dark themes (#5470)

* Merge AMOLED and regular dark themes

This allows all variants of dark themes to use black backgrounds as a
separate preference.

* Merge light and dark themes

* Fix ReaderSeekBar color on Dark Blue theme

* Color fixes

* Fix Dark Blue bars ripple

* Simplify night mode check

(cherry picked from commit 0eadc028b6)

# Conflicts:
#	app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferenceValues.kt
#	app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferencesHelper.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseThemedActivity.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsGeneralController.kt

app/src/main/AndroidManifest.xml

@@ -33,7 +33,7 @@
         android:largeHeap="true"
         android:requestLegacyExternalStorage="true"
         android:roundIcon="@mipmap/ic_launcher_round"
-        android:theme="@style/Theme.Base.Light"
+        android:theme="@style/Theme.Tachiyomi"
         android:networkSecurityConfig="@xml/network_security_config">
         <activity
             android:name=".ui.main.MainActivity"
@@ -85,7 +85,7 @@
         </activity>
         <activity
             android:name=".ui.security.UnlockActivity"
-            android:theme="@style/Theme.Base.Light" />
+            android:theme="@style/Theme.Tachiyomi" />
         <activity
             android:name=".ui.webview.WebViewActivity"
             android:configChanges="uiMode|orientation|screenSize" />
@@ -192,7 +192,7 @@
         <activity
             android:name="exh.ui.intercept.InterceptActivity"
             android:label="@string/app_name"
-            android:theme="@style/Theme.Base.Light">
+            android:theme="@style/Theme.Tachiyomi">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
 
@@ -366,7 +366,7 @@
         </activity>
         <activity
             android:name="exh.ui.captcha.BrowserActionActivity"
-            android:theme="@style/Theme.Base.Light" />
+            android:theme="@style/Theme.Tachiyomi" />
     </application>
 
 </manifest>