upgrade appcompat, fix nightmode (#1455)

* upgrade appcompat, fix language switching & nightmode

* cleanup ThemeUtils

* upgrade dependencies

* change active boost icon (#1513)

* upgrade jetifier and android gradle plugin

* fix FilterTest

app/src/main/java/com/keylesspalace/tusky/BaseActivity.java

@@ -52,8 +52,6 @@ import javax.inject.Inject;
 
 public abstract class BaseActivity extends AppCompatActivity implements Injectable {
 
-    @Inject
-    public ThemeUtils themeUtils;
     @Inject
     public AccountManager accountManager;
 
@@ -75,8 +73,6 @@ public abstract class BaseActivity extends AppCompatActivity implements Injectab
             setTheme(R.style.TuskyBlackTheme);
         }
 
-        themeUtils.setAppNightMode(theme, this);
-
         /* set the taskdescription programmatically, the theme would turn it blue */
         String appName = getString(R.string.app_name);
         Bitmap appIcon = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);