added Lab3_DangerousApp student distribution

Lab3_DangerousApp/.gitignore

Lab3_DangerousApp/app/build.gradle

Lab3_DangerousApp/app/src/main/AndroidManifest.xml

...main/java/course/labs/dangerousapp/DangerousActivity.java

...ngerousApp/app/src/main/res/drawable-hdpi/ic_launcher.png

...ngerousApp/app/src/main/res/drawable-mdpi/ic_launcher.png

...gerousApp/app/src/main/res/drawable-xhdpi/ic_launcher.png

...erousApp/app/src/main/res/drawable-xxhdpi/ic_launcher.png

Lab3_DangerousApp/app/src/main/res/layout/activity_main.xml

Lab3_DangerousApp/app/src/main/res/values/dimens.xml

Lab3_DangerousApp/app/src/main/res/values/strings.xml

Lab3_DangerousApp/app/src/main/res/values/styles.xml

Lab3_DangerousApp/build.gradle

Lab3_DangerousApp/gradle/wrapper/gradle-wrapper.jar

Lab3_DangerousApp/gradle/wrapper/gradle-wrapper.properties

Lab3_DangerousApp/gradlew

Lab3_DangerousApp/gradlew.bat

Lab3_DangerousApp/ic_launcher-web.png

Lab3_DangerousApp/import-summary.txt

Lab3_DangerousApp/proguard-project.txt