Rename Component and Screenshot Tests

briar-android/fastlane/Screengrabfile

...rproject/briar/android/BriarTestComponentApplication.java

.../org/briarproject/briar/android/BriarUiTestComponent.java

...riarproject/briar/android/login/PasswordActivityTest.java

...ject/briar/android/login/SetupActivityScreenshotTest.java

...roject/briar/android/navdrawer/NavDrawerActivityTest.java

...riar/android/settings/SettingsActivityScreenshotTest.java

...a/org/briarproject/briar/android/test/ScreenshotTest.java