Merge branch '1360-rename-main-flavor' into 'master'

Rename main flavor due to internal conflicts

Closes #1360

See merge request briar/briar!885

briar-android/build.gradle

@@ -296,7 +296,7 @@ android {
 			minSdkVersion 18
 			applicationIdSuffix ".screenshot" // = org.briarproject.briar.android.screenshot.debug
 		}
-		main {
+		official {
 			dimension "version"
 		}
 	}

briar-android/src/androidTest/java/org/briarproject/briar/android/BriarUiTestComponent.java

@@ -4,7 +4,6 @@ import org.briarproject.bramble.BrambleAndroidModule;
 import org.briarproject.bramble.BrambleCoreModule;
 import org.briarproject.bramble.account.BriarAccountModule;
 import org.briarproject.briar.BriarCoreModule;
-import org.briarproject.briar.android.login.PasswordActivityTest;
 import org.briarproject.briar.android.login.SetupActivityScreenshotTest;
 import org.briarproject.briar.android.navdrawer.NavDrawerActivityTest;
 import org.briarproject.briar.android.settings.SettingsActivityScreenshotTest;
@@ -24,7 +23,6 @@ import dagger.Component;
 public interface BriarUiTestComponent extends AndroidComponent {
 
 	void inject(SetupActivityScreenshotTest test);
-	void inject(PasswordActivityTest test);
 	void inject(NavDrawerActivityTest test);
 	void inject(SettingsActivityScreenshotTest test);